/*******************************************************************************
* Copyright (c) 2005, 2014 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Stephan Herrmann - Contribution for
* Bug 423505 - [1.8] Implement "18.5.4 More Specific Method Inference"
*******************************************************************************/
package org.eclipse.jdt.core.tests.compiler.regression;
import java.io.File;
import java.util.Map;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.compiler.CharOperation;
import org.eclipse.jdt.core.util.IClassFileAttribute;
import org.eclipse.jdt.core.util.IClassFileReader;
import org.eclipse.jdt.core.util.IMethodInfo;
import org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;
import org.eclipse.jdt.internal.compiler.impl.CompilerOptions;
import junit.framework.Test;
@SuppressWarnings({ "unchecked", "rawtypes" })
public class VarargsTest extends AbstractComparableTest {
public VarargsTest(String name) {
super(name);
}
// Static initializer to specify tests subset using TESTS_* static variables
// All specified tests which does not belong to the class are skipped...
static {
// TESTS_NAMES = new String[] { "test070b" };
// TESTS_NUMBERS = new int[] { 61 };
// TESTS_RANGE = new int[] { 11, -1 };
}
public static Test suite() {
return buildComparableTestSuite(testClass());
}
public static Class testClass() {
return VarargsTest.class;
}
public void test001() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y y = new Y();\n" +
" y = new Y(null);\n" +
" y = new Y(1);\n" +
" y = new Y(1, 2, (byte) 3, 4);\n" +
" y = new Y(new int[] {1, 2, 3, 4 });\n" +
" \n" +
" Y.count();\n" +
" Y.count(null);\n" +
" Y.count(1);\n" +
" Y.count(1, 2, (byte) 3, 4);\n" +
" Y.count(new int[] {1, 2, 3, 4 });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public Y(int ... values) {\n" +
" int result = 0;\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += values[i];\n" +
" System.out.print(result);\n" +
" System.out.print(' ');\n" +
" }\n" +
" public static void count(int ... values) {\n" +
" int result = 0;\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += values[i];\n" +
" System.out.print(result);\n" +
" System.out.print(' ');\n" +
" }\n" +
"}\n",
},
"<0 0 1 10 10 0 0 1 10 10 >");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y y = new Y();\n" +
" y = new Y(null);\n" +
" y = new Y(1);\n" +
" y = new Y(1, 2, (byte) 3, 4);\n" +
" y = new Y(new int[] {1, 2, 3, 4 });\n" +
" \n" +
" Y.count();\n" +
" Y.count(null);\n" +
" Y.count(1);\n" +
" Y.count(1, 2, (byte) 3, 4);\n" +
" Y.count(new int[] {1, 2, 3, 4 });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n",
},
"<0 0 1 10 10 0 0 1 10 10 >",
null,
false,
null);
}
public void test002() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y y = new Y();\n" +
" y = new Y(null);\n" +
" y = new Y(1);\n" +
" y = new Y(1, 2, (byte) 3, 4);\n" +
" y = new Y(new int[] {1, 2, 3, 4 });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y extends Z {\n" +
" public Y(int ... values) { super(values); }\n" +
"}\n" +
"class Z {\n" +
" public Z(int ... values) {\n" +
" int result = 0;\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += values[i];\n" +
" System.out.print(result);\n" +
" System.out.print(' ');\n" +
" }\n" +
"}\n",
},
"<0 0 1 10 10 >");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y y = new Y();\n" +
" y = new Y(null);\n" +
" y = new Y(1);\n" +
" y = new Y(1, 2, (byte) 3, 4);\n" +
" y = new Y(new int[] {1, 2, 3, 4 });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n",
},
"<0 0 1 10 10 >",
null,
false,
null);
}
public void test003() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count();\n" +
" Y.count((int[]) null);\n" +
" Y.count((int[][]) null);\n" +
" Y.count(new int[] {1});\n" +
" Y.count(new int[] {1, 2}, new int[] {3, 4});\n" +
" Y.count(new int[][] {new int[] {1, 2, 3}, new int[] {4}});\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static int count(int[] values) {\n" +
" int result = 0;\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += values[i];\n" +
" System.out.print(' ');\n" +
" System.out.print(result);\n" +
" return result;\n" +
" }\n" +
" public static void count(int[] ... values) {\n" +
" int result = 0;\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += count(values[i]);\n" +
" System.out.print('=');\n" +
" System.out.print(result);\n" +
" }\n" +
"}\n",
},
"<=0 0=0 1 3 7=10 6 4=10>");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count();\n" +
" Y.count((int[]) null);\n" +
" Y.count((int[][]) null);\n" +
" Y.count(new int[] {1});\n" +
" Y.count(new int[] {1, 2}, new int[] {3, 4});\n" +
" Y.count(new int[][] {new int[] {1, 2, 3}, new int[] {4}});\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n"
},
"<=0 0=0 1 3 7=10 6 4=10>",
null,
false,
null);
}
public void test004() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count(0);\n" +
" Y.count(-1, (int[]) null);\n" +
" Y.count(-2, (int[][]) null);\n" +
" Y.count(1);\n" +
" Y.count(2, new int[] {1});\n" +
" Y.count(3, new int[] {1}, new int[] {2, 3}, new int[] {4});\n" +
" Y.count((byte) 4, new int[][] {new int[] {1}, new int[] {2, 3}, new int[] {4}});\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static int count(int j, int[] values) {\n" +
" int result = j;\n" +
" System.out.print(' ');\n" +
" System.out.print('[');\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += values[i];\n" +
" System.out.print(result);\n" +
" System.out.print(']');\n" +
" return result;\n" +
" }\n" +
" public static void count(int j, int[] ... values) {\n" +
" int result = j;\n" +
" System.out.print(' ');\n" +
" System.out.print(result);\n" +
" System.out.print(':');\n" +
" for (int i = 0, l = values == null ? 0 : values.length; i < l; i++)\n" +
" result += count(j, values[i]);\n" +
" System.out.print('=');\n" +
" System.out.print(result);\n" +
" }\n" +
"}\n",
},
"< 0:=0 [-1] -2:=-2 1:=1 [3] 3: [4] [8] [7]=22 4: [5] [9] [8]=26>");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count(0);\n" +
" Y.count(-1, (int[]) null);\n" +
" Y.count(-2, (int[][]) null);\n" +
" Y.count(1);\n" +
" Y.count(2, new int[] {1});\n" +
" Y.count(3, new int[] {1}, new int[] {2, 3}, new int[] {4});\n" +
" Y.count((byte) 4, new int[][] {new int[] {1}, new int[] {2, 3}, new int[] {4}});\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n"
},
"< 0:=0 [-1] -2:=-2 1:=1 [3] 3: [4] [8] [7]=22 4: [5] [9] [8]=26>",
null,
false,
null);
}
public void test005() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.print();\n" +
" Y.print(new Integer(1));\n" +
" Y.print(new Integer(1), new Byte((byte) 3), new Integer(7));\n" +
" Y.print(new Integer[] {new Integer(11) });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void print(Number ... values) {\n" +
" for (int i = 0, l = values.length; i < l; i++) {\n" +
" System.out.print(' ');\n" +
" System.out.print(values[i]);\n" +
" }\n" +
" System.out.print(',');\n" +
" }\n" +
"}\n",
},
"<, 1, 1 3 7, 11,>");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.print();\n" +
" Y.print(new Integer(1));\n" +
" Y.print(new Integer(1), new Byte((byte) 3), new Integer(7));\n" +
" Y.print(new Integer[] {new Integer(11) });\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n",
},
"<, 1, 1 3 7, 11,>",
null,
false,
null);
}
public void test006() { // 70056
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" String[] T_NAMES = new String[] {\"foo\"};\n" +
" String error = \"error\";\n" +
" Y.format(\"E_UNSUPPORTED_CONV\", new Integer(0));\n" +
" Y.format(\"E_SAVE\", T_NAMES[0], error);\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static String format(String key) { return null; }\n" +
" public static String format(String key, Object ... args) { return null; }\n" +
"}\n",
},
"");
}
public void test007() { // array dimension test compatibility with Object
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.byte2(null);\n" + // warning: inexact argument type for last parameter
" Y.byte2((byte) 1);\n" + // error
" Y.byte2(new byte[] {});\n" +
" Y.byte2(new byte[][] {});\n" +
" Y.byte2(new byte[][][] {});\n" + // error
"\n" +
" Y.object(null);\n" + // warning
" Y.object((byte) 1);\n" +
" Y.object(new byte[] {});\n" +
" Y.object(new byte[][] {});\n" + // warning
" Y.object(new byte[][][] {});\n" + // warning
"\n" +
" Y.object(new String());\n" +
" Y.object(new String[] {});\n" + // warning
" Y.object(new String[][] {});\n" + // warning
"\n" +
" Y.object2(null);\n" + // warning
" Y.object2((byte) 1);\n" + // error
" Y.object2(new byte[] {});\n" + // error
" Y.object2(new byte[][] {});\n" +
" Y.object2(new byte[][][] {});\n" + // warning
"\n" +
" Y.object2(new String());\n" + // error
" Y.object2(new String[] {});\n" +
" Y.object2(new String[][] {});\n" + // warning
"\n" +
" Y.string(null);\n" + // warning
" Y.string(new String());\n" +
" Y.string(new String[] {});\n" +
" Y.string(new String[][] {});\n" + // error
"\n" +
" Y.string(new Object());\n" + // error
" Y.string(new Object[] {});\n" + // error
" Y.string(new Object[][] {});\n" + // error
" }\n" +
"}\n" +
"class Y {\n" +
" public static void byte2(byte[] ... values) {}\n" +
" public static void object(Object ... values) {}\n" +
" public static void object2(Object[] ... values) {}\n" +
" public static void string(String ... values) {}\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 3)\n" +
" Y.byte2(null);\n" +
" ^^^^^^^^^^^^^\n" +
"Type null of the last argument to method byte2(byte[]...) doesn't exactly match the vararg parameter type. Cast to byte[][] to confirm the non-varargs invocation, or pass individual arguments of type byte[] for a varargs invocation.\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" Y.byte2((byte) 1);\n" +
" ^^^^^\n" +
"The method byte2(byte[]...) in the type Y is not applicable for the arguments (byte)\n" +
"----------\n" +
"3. ERROR in X.java (at line 7)\n" +
" Y.byte2(new byte[][][] {});\n" +
" ^^^^^\n" +
"The method byte2(byte[]...) in the type Y is not applicable for the arguments (byte[][][])\n" +
"----------\n" +
"4. WARNING in X.java (at line 9)\n" +
" Y.object(null);\n" +
" ^^^^^^^^^^^^^^\n" +
"Type null of the last argument to method object(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"5. WARNING in X.java (at line 12)\n" +
" Y.object(new byte[][] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type byte[][] of the last argument to method object(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"6. WARNING in X.java (at line 13)\n" +
" Y.object(new byte[][][] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type byte[][][] of the last argument to method object(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"7. WARNING in X.java (at line 16)\n" +
" Y.object(new String[] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type String[] of the last argument to method object(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"8. WARNING in X.java (at line 17)\n" +
" Y.object(new String[][] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type String[][] of the last argument to method object(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"9. WARNING in X.java (at line 19)\n" +
" Y.object2(null);\n" +
" ^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to method object2(Object[]...) doesn't exactly match the vararg parameter type. Cast to Object[][] to confirm the non-varargs invocation, or pass individual arguments of type Object[] for a varargs invocation.\n" +
"----------\n" +
"10. ERROR in X.java (at line 20)\n" +
" Y.object2((byte) 1);\n" +
" ^^^^^^^\n" +
"The method object2(Object[]...) in the type Y is not applicable for the arguments (byte)\n" +
"----------\n" +
"11. ERROR in X.java (at line 21)\n" +
" Y.object2(new byte[] {});\n" +
" ^^^^^^^\n" +
"The method object2(Object[]...) in the type Y is not applicable for the arguments (byte[])\n" +
"----------\n" +
"12. WARNING in X.java (at line 23)\n" +
" Y.object2(new byte[][][] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type byte[][][] of the last argument to method object2(Object[]...) doesn't exactly match the vararg parameter type. Cast to Object[][] to confirm the non-varargs invocation, or pass individual arguments of type Object[] for a varargs invocation.\n" +
"----------\n" +
"13. ERROR in X.java (at line 25)\n" +
" Y.object2(new String());\n" +
" ^^^^^^^\n" +
"The method object2(Object[]...) in the type Y is not applicable for the arguments (String)\n" +
"----------\n" +
"14. WARNING in X.java (at line 27)\n" +
" Y.object2(new String[][] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type String[][] of the last argument to method object2(Object[]...) doesn't exactly match the vararg parameter type. Cast to Object[][] to confirm the non-varargs invocation, or pass individual arguments of type Object[] for a varargs invocation.\n" +
"----------\n" +
"15. WARNING in X.java (at line 29)\n" +
" Y.string(null);\n" +
" ^^^^^^^^^^^^^^\n" +
"Type null of the last argument to method string(String...) doesn't exactly match the vararg parameter type. Cast to String[] to confirm the non-varargs invocation, or pass individual arguments of type String for a varargs invocation.\n" +
"----------\n" +
"16. ERROR in X.java (at line 32)\n" +
" Y.string(new String[][] {});\n" +
" ^^^^^^\n" +
"The method string(String...) in the type Y is not applicable for the arguments (String[][])\n" +
"----------\n" +
"17. ERROR in X.java (at line 34)\n" +
" Y.string(new Object());\n" +
" ^^^^^^\n" +
"The method string(String...) in the type Y is not applicable for the arguments (Object)\n" +
"----------\n" +
"18. ERROR in X.java (at line 35)\n" +
" Y.string(new Object[] {});\n" +
" ^^^^^^\n" +
"The method string(String...) in the type Y is not applicable for the arguments (Object[])\n" +
"----------\n" +
"19. ERROR in X.java (at line 36)\n" +
" Y.string(new Object[][] {});\n" +
" ^^^^^^\n" +
"The method string(String...) in the type Y is not applicable for the arguments (Object[][])\n" +
"----------\n");
}
public void test008() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y y = new Y(null);\n" +
" y = new Y(true, null);\n" + // null warning
" y = new Y('i', null);\n" + // null warning
" }\n" +
"}\n" +
"class Y {\n" +
" public Y(int ... values) {}\n" +
" public Y(boolean b, Object ... values) {}\n" +
" public Y(char c, int[] ... values) {}\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 4)\n" +
" y = new Y(true, null);\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to constructor Y(boolean, Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"2. WARNING in X.java (at line 5)\n" +
" y = new Y(\'i\', null);\n" +
" ^^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to constructor Y(char, int[]...) doesn't exactly match the vararg parameter type. Cast to int[][] to confirm the non-varargs invocation, or pass individual arguments of type int[] for a varargs invocation.\n" +
"----------\n");
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y y = new Y(null);\n" +
" y = new Y(true, null);\n" + // null warning
" y = new Y('i', null);\n" + // null warning
" }\n" +
"}\n" +
"class Y extends Z {\n" +
" public Y(int ... values) { super(values); }\n" +
" public Y(boolean b, Object ... values) { super(b, values); }\n" +
" public Y(char c, int[] ... values) {}\n" +
"}\n" +
"class Z {\n" +
" public Z(int ... values) {}\n" +
" public Z(boolean b, Object ... values) {}\n" +
" public Z(char c, int[] ... values) {}\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 4)\n" +
" y = new Y(true, null);\n" +
" ^^^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to constructor Y(boolean, Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"2. WARNING in X.java (at line 5)\n" +
" y = new Y(\'i\', null);\n" +
" ^^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to constructor Y(char, int[]...) doesn't exactly match the vararg parameter type. Cast to int[][] to confirm the non-varargs invocation, or pass individual arguments of type int[] for a varargs invocation.\n" +
"----------\n");
}
public void test009() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count(null);\n" +
" Y.count(1);\n" +
" Y.count(1, 2);\n" +
"\n" +
" Z.count(1L, 1);\n" + // only choice is Z.count(long, int)
" Z.count(1, 1);\n" + // chooses Z.count(long, long) over Z.count(int,int...)
" Z.count(1, null);\n" + // only choice is Z.count(int,int...)
" Z.count2(1, null);\n" + // better choice is Z.count(int,int[])
" Z.count2(1L, null);\n" + // better choice is Z.count(long,int...)
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int values) { System.out.print('1'); }\n" +
" public static void count(int ... values) { System.out.print('2'); }\n" +
"}\n" +
"class Z {\n" +
" public static void count(long l, long values) { System.out.print('3'); }\n" +
" public static void count(int i, int ... values) { System.out.print('4'); }\n" +
" public static void count2(int i, int values) { System.out.print('5'); }\n" +
" public static void count2(long l, int ... values) { System.out.print('6'); }\n" +
"}\n",
},
"<21233466>");
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.test((Object[]) null);\n" + // cast to avoid null warning
" Y.test(null, null);\n" +
" Y.test(null, null, null);\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void test(Object o, Object o2) { System.out.print('1'); }\n" +
" public static void test(Object ... values) { System.out.print('2'); }\n" +
"}\n",
},
"<212>");
}
public void test010() {
// according to spec this should find count(Object) since it should consider count(Object...) as count(Object[]) until all fixed arity methods are ruled out
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count((Object) new Integer(1));\n" +
" Y.count(new Integer(1));\n" +
"\n" +
" Y.count((Object) null);\n" +
" Y.count((Object[]) null);\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(Object values) { System.out.print('1'); }\n" +
" public static void count(Object ... values) { System.out.print('2'); }\n" +
"}\n",
},
"<1112>");
// according to spec this should find count(Object[]) since it should consider count(Object[]...) as count(Object[][]) until all fixed arity methods are ruled out
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" System.out.print('<');\n" +
" Y.count(new Object[] {new Integer(1)});\n" +
" Y.count(new Integer[] {new Integer(1)});\n" +
"\n" +
" Y.count((Object[]) null);\n" +
" Y.count((Object[][]) null);\n" +
" System.out.print('>');\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(Object[] values) { System.out.print('1'); }\n" +
" public static void count(Object[] ... values) { System.out.print('2'); }\n" +
"}\n",
},
"<1112>");
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.string(null);\n" +
" Y.string2(null);\n" +
" Y.int2(null);\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void string(String values) { System.out.print('1'); }\n" +
" public static void string(String ... values) { System.out.print('2'); }\n" +
" public static void string2(String[] values) { System.out.print('1'); }\n" +
" public static void string2(String[] ... values) { System.out.print('2'); }\n" +
" public static void int2(int[] values) { System.out.print('1'); }\n" +
" public static void int2(int[] ... values) { System.out.print('2'); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Y.string(null);\n" +
" ^^^^^^\n" +
"The method string(String) is ambiguous for the type Y\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" Y.string2(null);\n" +
" ^^^^^^^\n" +
"The method string2(String[]) is ambiguous for the type Y\n" +
"----------\n" +
"3. ERROR in X.java (at line 5)\n" +
" Y.int2(null);\n" +
" ^^^^\n" +
"The method int2(int[]) is ambiguous for the type Y\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=83379
public void test011() {
runConformTest(
true,
new String[] {
"X.java",
"public class X { void count(int ... values) {} }\n" +
"class Y extends X { void count(int[] values) {} }\n" +
"class Z extends Y { void count(int... values) {} }\n"
},
"----------\n" +
"1. WARNING in X.java (at line 2)\n" +
" class Y extends X { void count(int[] values) {} }\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"Varargs methods should only override or be overridden by other varargs methods unlike Y.count(int[]) and X.count(int...)\n" +
"----------\n" +
"2. WARNING in X.java (at line 2)\n" +
" class Y extends X { void count(int[] values) {} }\n" +
" ^^^^^^^^^^^^^^^^^^^\n" +
"The method count(int[]) of type Y should be tagged with @Override since it actually overrides a superclass method\n" +
"----------\n" +
"3. WARNING in X.java (at line 3)\n" +
" class Z extends Y { void count(int... values) {} }\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"Varargs methods should only override or be overridden by other varargs methods unlike Z.count(int...) and Y.count(int[])\n" +
"----------\n" +
"4. WARNING in X.java (at line 3)\n" +
" class Z extends Y { void count(int... values) {} }\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"The method count(int...) of type Z should be tagged with @Override since it actually overrides a superclass method\n" +
"----------\n",
null,
null,
JavacTestOptions.EclipseHasABug.EclipseBug236379);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=77084
public void test012() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main (String ... args) {\n" +
" for (String a:args) {\n" +
" System.out.println(a);\n" +
" }\n" +
" }\n" +
"}\n" +
"\n"
}
);
}
public void test013() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(1, 1);\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(long i, int j) { System.out.print(1); }\n" +
" public static void count(int ... values) { System.out.print(2); }\n" +
"}\n",
},
"1");
}
public void test014() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0], 1);\n" +
" Y.count(new int[0], 1, 1);\n" +
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) { System.out.print(1); }\n" +
" public static void count(Object o, int ... values) { System.out.print(2); }\n" +
"}\n",
},
"11"
);
}
public void test015() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0]);\n" + // for some reason this is not ambiguous
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) { System.out.print(1); }\n" +
" public static void count(int[] array, int[] ... values) { System.out.print(2); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Y.count(new int[0]);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test015_tolerate() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
Map options = getCompilerOptions();
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0]);\n" + // for some reason this is not ambiguous
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) { System.out.print(1); }\n" +
" public static void count(int[] array, int[] ... values) { System.out.print(2); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Y.count(new int[0]);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n",
null, true, options);
} else {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0]);\n" + // for some reason this is not ambiguous
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) { System.out.print(1); }\n" +
" public static void count(int[] array, int[] ... values) { System.out.print(2); }\n" +
"}\n",
},
"1",
null, true, null, options, null);
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
public void test016() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runNegativeTest( // but this call is ambiguous
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0]);\n" + // reference to count is ambiguous, both method count(int[],int...) in Y and method count(int[],int[][]...) in Y match
" Y.count(new int[0], null);\n" + // reference to count is ambiguous, both method count(int[],int...) in Y and method count(int[],int[]...) in Y match
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) { System.out.print(0); }\n" +
" public static void count(int[] array, int[][] ... values) { System.out.print(1); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Y.count(new int[0]);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" Y.count(new int[0], null);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n"
);
}
public void test017() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" Y.count(new int[0], 1);\n" + // reference to count is ambiguous, both method count(int[],int...) in Y and method count(int[],int,int...) in Y match
" Y.count(new int[0], 1, 1);\n" + // reference to count is ambiguous, both method count(int[],int...) in Y and method count(int[],int,int...) in Y match
" Y.count(new int[0], 1, 1, 1);\n" + // reference to count is ambiguous, both method count(int[],int...) in Y and method count(int[],int,int...) in Y match
" }\n" +
"}\n" +
"class Y {\n" +
" public static void count(int[] array, int ... values) {}\n" +
" public static void count(int[] array, int[] ... values) {}\n" +
" public static void count(int[] array, int i, int ... values) {}\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" Y.count(new int[0], 1);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" Y.count(new int[0], 1, 1);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n" +
"3. ERROR in X.java (at line 5)\n" +
" Y.count(new int[0], 1, 1, 1);\n" +
" ^^^^^\n" +
"The method count(int[], int[]) is ambiguous for the type Y\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=81590
public void test018() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" String[][] x = {{\"X\"}, {\"Y\"}};\n" +
" List l = Arrays.asList(x);\n" +
" System.out.println(l.size() + \" \" + l.get(0).getClass().getName());\n" +
" }\n" +
"}\n",
},
"2 [Ljava.lang.String;");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=81590 - variation
public void test019() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" String[][] x = {{\"X\"}, {\"Y\"}};\n" +
" System.out.println(asList(x[0], x[1]).get(1).getClass().getName());\n" +
" }\n" +
" static <U> List<U> asList(U u1, U... us) {\n" +
" List<U> result = new ArrayList<U>();\n" +
" result.add(u1);\n" +
" result.add(us[0]);\n" +
" return result;\n" +
" }\n" +
"}\n",
},
"java.lang.String");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=81590 - variation
public void test020() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" String[][] x = {{\"X\"}, {\"Y\"}};\n" +
" System.out.println(asList(x[0], x).get(1).getClass().getName());\n" +
" }\n" +
" static <U> List<U> asList(U u1, U... us) {\n" +
" List<U> result = new ArrayList<U>();\n" +
" result.add(u1);\n" +
" result.add(us[0]);\n" +
" return result;\n" +
" }\n" +
"}\n",
},
"[Ljava.lang.String;");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=81911
public void test021() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" String[][] arr = new String[][] { args };\n" +
" ArrayList<String[]> al = new ArrayList<String[]>(Arrays.asList(arr));\n" +
" }\n" +
"}\n",
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=83032
public void test022() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" String[] args;\n" +
" public X(String... args) {\n" +
" this.args = args;\n" +
" }\n" +
" public static X foo() {\n" +
" return new X(\"SU\", \"C\", \"CE\", \"SS\"){};\n" +
" }\n" +
" public String bar() {\n" +
" if (this.args != null) {\n" +
" StringBuffer buffer = new StringBuffer();\n" +
" for (String s : this.args) {\n" +
" buffer.append(s);\n" +
" }\n" +
" return String.valueOf(buffer);\n" +
" }\n" +
" return null;\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" System.out.print(foo().bar());\n" +
" }\n" +
"}\n",
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=83536
public void test023() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main (String[] args) {\n" +
" new X().test (new byte[5]);\n" +
" System.out.print(\"SUCCESS\");\n" +
" }\n" +
" private void test (Object... params) {\n" +
" }\n" +
"}",
},
"SUCCESS");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=87042
public void test024() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" static boolean foo(Object... args) {\n" +
" return args == null;\n" +
" }\n" +
"\n" +
" public static void main(String[] args) {\n" +
" System.out.println(foo(null, null));\n" +
" }\n" +
"}",
},
"false");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=87042
public void test025() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" static boolean foo(Object... args) {\n" +
" return args == null;\n" +
" }\n" +
"\n" +
" public static void main(String[] args) {\n" +
" System.out.println(foo(null));\n" +
" }\n" +
"}",
},
"true");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=87318
public void test026() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" static void foo(int[] intarray) {\n" +
" List<int[]> l = Arrays.asList(intarray);\n" +
" System.out.print(l.get(0).length);\n" +
" }\n" +
" static void foo(String[] strarray) {\n" +
" List l = Arrays.asList(strarray);\n" +
" System.out.print(l);\n" +
" } \n" +
" public static void main(String[] args) {\n" +
" foo(new int[]{0, 1});\n" +
" foo(new String[]{\"a\",\"b\"});\n" +
" System.out.println(\"done\");\n" +
" }\n" +
"}\n",
},
"2[a, b]done");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=87900
public void test027() { // ensure AccVarargs does not collide
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" transient private X() {}\n" +
" void test() { X x = new X(); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\r\n" +
" transient private X() {}\r\n" +
" ^^^\n" +
"Illegal modifier for the constructor in type X; only public, protected & private are permitted\n" +
"----------\n"
);
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" transient private X(Object... o) {}\n" +
" void test() { X x = new X(1, 2); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" transient private X(Object... o) {}\n" +
" ^^^^^^^^^^^^^^\n" +
"Illegal modifier for the constructor in type X; only public, protected & private are permitted\n" +
"----------\n"
);
}
// check no offending unnecessary varargs cast gets diagnosed
public void test028() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.lang.reflect.Method;\n" +
"\n" +
"public class X {\n" +
" void test(Method method){ \n" +
" try {\n" +
" method.invoke(this);\n" +
" method.invoke(this, new Class[0]);\n" +
" method.invoke(this, (Object[])new Class[0]);\n" +
" } catch (Exception e) {\n" +
" } \n" +
" }\n" +
" Zork z;\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 7)\n" +
" method.invoke(this, new Class[0]);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type Class[] of the last argument to method invoke(Object, Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"2. ERROR in X.java (at line 12)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=91467
public void test029() {
this.runNegativeTest(
new String[] {
"X.java",
"/**\n" +
" * Whatever you do, eclipse doesn\'t like it.\n" +
" */\n" +
"public class X {\n" +
"\n" +
" /**\n" +
" * Passing a String vararg to a method needing an Object array makes eclipse\n" +
" * either ask for a cast or complain that it is unnecessary. You cannot do\n" +
" * it right.\n" +
" * \n" +
" * @param s\n" +
" */\n" +
" public static void q(String... s) {\n" +
" // OK reports: Varargs argument String[] should be cast to Object[] when passed to the method printf(String, Object...) from type PrintStream\n" +
" System.out.printf(\"\", s);\n" +
" // WRONG reports: Unnecessary cast from String[] to Object[]\n" +
" System.out.printf(\"\", (Object[]) s); \n" +
" }\n" +
" Zork z;\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 15)\n" +
" System.out.printf(\"\", s);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type String[] of the last argument to method printf(String, Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"2. ERROR in X.java (at line 19)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=99260
public void test030() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" audit(\"osvaldo\", \"localhost\", \"logged\", \"X\", new Integer(0));\n" +
" audit(\"osvaldo\", \"localhost\", \"logged\", \"X\", \"Y\");\n" +
" audit(\"osvaldo\", \"localhost\", \"logged\", new Float(0), new java.awt.Point(0, 0));\n" +
" }\n" +
" public static <A extends Serializable> void audit(String login,\n" +
" String address, String event, A... args) {\n" +
" for (A a : args) {\n" +
" System.out.println(a.getClass());\n" +
" }\n" +
" }\n" +
"}",
},
"class java.lang.String\n" +
"class java.lang.Integer\n" +
"class java.lang.String\n" +
"class java.lang.String\n" +
"class java.lang.Float\n" +
"class java.awt.Point");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=102181
public void test031() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
"\n" +
" public static void main(String[] args) {\n" +
" Test<String> t = new Tester();\n" +
" t.method(\"SUCCESS\");\n" +
" }\n" +
"\n" +
" static abstract class Test<A> {\n" +
" abstract void method(A... args);\n" +
" }\n" +
"\n" +
" static class Tester extends Test<String> {\n" +
"\n" +
" @Override void method(String... args) {\n" +
" call(args);\n" +
" }\n" +
"\n" +
" void call(String[] args) {\n" +
" for (String str : args)\n" +
" System.out.println(str);\n" +
" }\n" +
" }\n" +
"}\n",
},
"SUCCESS");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=102278
public void test032() {
this.runConformTest(
new String[] {
"Functor.java",
"public class Functor<T> {\n" +
" public void func(T... args) {\n" +
" // do noting;\n" +
" }\n" +
" \n" +
" public static void main(String... args) {\n" +
" Functor<String> functor = new Functor<String>() {\n" +
" public void func(String... args) {\n" +
" System.out.println(args.length);\n" +
" }\n" +
" };\n" +
" functor.func(\"Hello!\");\n" +
" }\n" +
"}\n",
},
"1");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=102631
public void test033() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(boolean b, Object... o) {System.out.print(1);}\n" +
" void a(Object... o) {System.out.print(2);}\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.a(true);\n" +
" x.a(true, \"foobar\");\n" +
" x.a(\"foo\", \"bar\");\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" x.a(true);\n" +
" ^\n" +
"The method a(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 7)\n" +
" x.a(true, \"foobar\");\n" +
" ^\n" +
"The method a(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n");
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void b(boolean b, Object... o) {}\n" +
" void b(Boolean... o) {}\n" +
" void c(boolean b, boolean b2, Object... o) {}\n" +
" void c(Boolean b, Object... o) {}\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.b(true);\n" +
" x.b(true, false);\n" +
" x.c(true, true, true);\n" +
" x.c(Boolean.TRUE, Boolean.TRUE, Boolean.TRUE);\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 8)\r\n" +
" x.b(true);\r\n" +
" ^\n" +
"The method b(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 9)\r\n" +
" x.b(true, false);\r\n" +
" ^\n" +
"The method b(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"3. ERROR in X.java (at line 10)\r\n" +
" x.c(true, true, true);\r\n" +
" ^\n" +
"The method c(boolean, boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"4. ERROR in X.java (at line 11)\r\n" +
" x.c(Boolean.TRUE, Boolean.TRUE, Boolean.TRUE);\r\n" +
" ^\n" +
"The method c(boolean, boolean, Object[]) is ambiguous for the type X\n" +
"----------\n"
);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test033_tolerate() {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
Map options = getCompilerOptions();
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(boolean b, Object... o) {System.out.print(1);}\n" +
" void a(Object... o) {System.out.print(2);}\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.a(true);\n" +
" x.a(true, \"foobar\");\n" +
" x.a(\"foo\", \"bar\");\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" x.a(true);\n" +
" ^\n" +
"The method a(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 7)\n" +
" x.a(true, \"foobar\");\n" +
" ^\n" +
"The method a(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n",
null, true, options);
} else {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void a(boolean b, Object... o) {System.out.print(1);}\n" +
" void a(Object... o) {System.out.print(2);}\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.a(true);\n" +
" x.a(true, \"foobar\");\n" +
" x.a(\"foo\", \"bar\");\n" +
" }\n" +
"}\n",
},
"112",
null, true, null, options, null);
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=106106
public void test034() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*; \n" +
"\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" double[][] d = { { 1 } , { 2 } }; \n" +
" List<double[]> l = Arrays.asList(d); // <T> List<T> asList(T... a)\n" +
" System.out.println(\"List size: \" + l.size());\n" +
" }\n" +
"}\n",
},
"List size: 2");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=108095
public void test035() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static <T> void foo(T ... values) {\n" +
" System.out.print(values.getClass());\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" X.<String>foo(\"monkey\", \"cat\");\n" +
" X.<String>foo(new String[] { \"monkey\", \"cat\" });\n" +
" }\n" +
"}",
},
"class [Ljava.lang.String;class [Ljava.lang.String;");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=110563
public void test036() {
this.runConformTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public void testBreak() {\n" +
" Collection<Class> classes = new ArrayList<Class>();\n" +
" classes.containsAll(Arrays.asList(String.class, Integer.class, Long.class));\n" +
" }\n" +
"}\n",
},
"");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=110783
public void test037() {
this.runConformTest(
new String[] {
"V.java",
"public class V {\n" +
" public static void main(String[] s) {\n" +
" V v = new V();\n" +
" v.foo(\"\", v, null, \"\");\n" +
" v.foo(\"\", v, null, \"\", 1);\n" +
" v.foo2(\"\");\n" +
" v.foo2(\"\", null);\n" +
" v.foo2(\"\", null, null);\n" +
" v.foo3(\"\", v, null, \"\", null);\n" +
" }\n" +
" void foo(String s, V v, Object... obs) {System.out.print(1);}\n" +
" void foo(String s, V v, String r, Object o, Object... obs) {System.out.print(2);}\n" +
" void foo2(Object... a) {System.out.print(1);}\n" +
" void foo2(String s, Object... a) {System.out.print(2);}\n" +
" void foo2(String s, Object o, Object... a) {System.out.print(3);}\n" +
" void foo3(String s, V v, String... obs) {System.out.print(1);}\n" +
" void foo3(String s, V v, String r, Object o, Object... obs) {System.out.print(2);}\n" +
"}\n",
},
"222232");
this.runNegativeTest(
new String[] {
"V.java",
"public class V {\n" +
" public static void main(String[] s) {\n" +
" V v = new V();\n" +
" v.foo2(null, \"\");\n" +
" v.foo2(null, \"\", \"\");\n" +
" v.foo3(\"\", v, null, \"\");\n" +
" }\n" +
" void foo2(String s, Object... a) {System.out.print(2);}\n" +
" void foo2(String s, Object o, Object... a) {System.out.print(3);}\n" +
" void foo3(String s, V v, String... obs) {System.out.print(1);}\n" +
" void foo3(String s, V v, String r, Object o, Object... obs) {System.out.print(2);}\n" +
"}\n",
},
(this.complianceLevel < ClassFileConstants.JDK1_8 ?
"----------\n" +
"1. ERROR in V.java (at line 4)\r\n" +
" v.foo2(null, \"\");\r\n" +
" ^^^^\n" +
"The method foo2(String, Object[]) is ambiguous for the type V\n" +
"----------\n" +
"2. ERROR in V.java (at line 5)\r\n" +
" v.foo2(null, \"\", \"\");\r\n" +
" ^^^^\n" +
"The method foo2(String, Object[]) is ambiguous for the type V\n" +
"----------\n" +
"3. ERROR in V.java (at line 6)\r\n" +
" v.foo3(\"\", v, null, \"\");\r\n" +
" ^^^^\n" +
"The method foo3(String, V, String[]) is ambiguous for the type V\n" +
"----------\n"
: // one fewer ambiguity in 1.8:
"----------\n" +
"1. ERROR in V.java (at line 4)\n" +
" v.foo2(null, \"\");\n" +
" ^^^^\n" +
"The method foo2(String, Object[]) is ambiguous for the type V\n" +
"----------\n" +
"2. ERROR in V.java (at line 5)\n" +
" v.foo2(null, \"\", \"\");\n" +
" ^^^^\n" +
"The method foo2(String, Object[]) is ambiguous for the type V\n" +
"----------\n")
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801
public void test038() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void varargs(Serializable... items) {\n" +
" System.out.println(Arrays.deepToString(items) + \" (argument wrapped)\");\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" varargs(new Object[] {1, 2}); //warns \"Varargs argument Object[] \n" +
" //should be cast to Serializable[] ..\", but proposed cast to\n" +
" //Serializable[] fails at runtime (javac does not warn here)\n" +
" varargs((Serializable[])new Object[] {1, 2}); //warns \"Varargs argument Object[] \n" +
" //should be cast to Serializable[] ..\", but proposed cast to\n" +
" //Serializable[] fails at runtime (javac does not warn here)\n" +
" Zork z;\n" +
" }\n" +
"}\n",
},
// check no varargs warning
"----------\n" +
"1. WARNING in X.java (at line 13)\n" +
" varargs((Serializable[])new Object[] {1, 2}); //warns \"Varargs argument Object[] \n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Object[] to Serializable[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 16)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test039() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void varargs(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items) + \" (argument wrapped)\");\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" try {\n" +
" varargs(new Object[] {1, 2}); //warns \"Varargs argument Object[] \n" +
" //should be cast to Serializable[] ..\", but proposed cast to\n" +
" //Serializable[] fails at runtime (javac does not warn here)\n" +
" varargs((Serializable[])new Object[] {1, 2}); //warns \"Varargs argument Object[] \n" +
" //should be cast to Serializable[] ..\", but proposed cast to\n" +
" //Serializable[] fails at runtime (javac does not warn here)\n" +
" } catch(ClassCastException e) {\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" }\n" +
"}\n",
},
"[[1, 2]] (argument wrapped)SUCCESS");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test040() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void array(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items));\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" array(new Serializable[] {3, 4});\n" +
" array(new Integer[] {5, 6}); //warns (as javac does)\n" +
" array(null); //warns (as javac does)\n" +
" }\n" +
"}\n",
},
"[3, 4][5, 6]null");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test041() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void array(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items));\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" array(new Serializable[] {3, 4});\n" +
" array(new Integer[] {5, 6}); //warns (as javac does)\n" +
" array(null); //warns (as javac does)\n" +
" Zork z;\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 11)\n" +
" array(new Integer[] {5, 6}); //warns (as javac does)\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type Integer[] of the last argument to method array(Serializable...) doesn't exactly match the vararg parameter type. Cast to Serializable[] to confirm the non-varargs invocation, or pass individual arguments of type Serializable for a varargs invocation.\n" +
"----------\n" +
"2. WARNING in X.java (at line 12)\n" +
" array(null); //warns (as javac does)\n" +
" ^^^^^^^^^^^\n" +
"Type null of the last argument to method array(Serializable...) doesn't exactly match the vararg parameter type. Cast to Serializable[] to confirm the non-varargs invocation, or pass individual arguments of type Serializable for a varargs invocation.\n" +
"----------\n" +
"3. ERROR in X.java (at line 13)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test042() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void varargs(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items) + \" (argument wrapped)\");\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" varargs((Serializable) new Object[] {1, 2});\n" +
" varargs((Serializable) new Serializable[] {3, 4}); //warns about\n" +
" //unnecessary cast, although cast is necessary (causes varargs call)\n" +
" varargs((Serializable) new Integer[] {5, 6});\n" +
" varargs((Serializable) null);\n" +
" }\n" +
"}\n",
},
"[[1, 2]] (argument wrapped)[[3, 4]] (argument wrapped)[[5, 6]] (argument wrapped)[null] (argument wrapped)");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test043() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void varargs(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items) + \" (argument wrapped)\");\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" varargs((Serializable) new Object[] {1, 2});\n" +
" varargs((Serializable) new Serializable[] {3, 4}); //warns about\n" +
" //unnecessary cast, although cast is necessary (causes varargs call)\n" +
" varargs((Serializable) new Integer[] {5, 6});\n" +
" varargs((Serializable) null);\n" +
" Zork z;\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 10)\n" +
" varargs((Serializable) new Object[] {1, 2});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Object[] to Serializable\n" +
"----------\n" +
"2. ERROR in X.java (at line 15)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test044() {
this.runConformTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void array(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items));\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" array((Serializable[]) new Serializable[] {3, 4}); //warns about unnecessary cast\n" +
" array((Serializable[]) new Integer[] {5, 6});\n" +
" array((Serializable[]) null);\n" +
" try {\n" +
" array((Serializable[]) new Object[] {1, 2}); // CCE at run time\n" +
" } catch(ClassCastException e) {\n" +
" System.out.println(\"SUCCESS\");\n" +
" }\n" +
" }\n" +
"}\n",
},
"[3, 4][5, 6]nullSUCCESS");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=105801 - variation
public void test045() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.io.Serializable;\n" +
"import java.util.Arrays;\n" +
"\n" +
"public class X {\n" +
" static void array(Serializable... items) {\n" +
" System.out.print(Arrays.deepToString(items));\n" +
" }\n" +
" @SuppressWarnings({\"boxing\"})\n" +
" public static void main(String[] args) {\n" +
" array((Serializable[]) new Serializable[] {3, 4}); //warns about unnecessary cast\n" +
" array((Serializable[]) new Integer[] {5, 6});\n" +
" array((Serializable[]) null);\n" +
" array((Serializable[]) new Object[] {1, 2}); // CCE at run time\n" +
" Zork z;\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 10)\n" +
" array((Serializable[]) new Serializable[] {3, 4}); //warns about unnecessary cast\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Serializable[] to Serializable[]\n" +
"----------\n" +
"2. WARNING in X.java (at line 13)\n" +
" array((Serializable[]) new Object[] {1, 2}); // CCE at run time\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Object[] to Serializable[]\n" +
"----------\n" +
"3. ERROR in X.java (at line 14)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=133918
public void test046() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void foo(Throwable... exceptions) {\n" +
" }\n" +
" void bar(Exception[] exceptions) {\n" +
" foo((Throwable[])exceptions);\n" +
" }\n" +
" Zork z;\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" foo((Throwable[])exceptions);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Exception[] to Throwable[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 7)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=140168
public void test047() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" void foo(Object id, Object value, String... groups) {}\n" +
" void foo(Y y, String... groups) {System.out.println(true);}\n" +
" public static void main(String[] args) {\n" +
" new X().foo(new Y(), \"a\", \"b\");\n" +
" }\n" +
"}\n" +
"class Y {}",
},
"true");
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void foo(Y y, Object value, String... groups) {}\n" +
" void foo(Object id, String... groups) {}\n" +
" public static void main(String[] args) {\n" +
" new X().foo(new Y(), \"a\", \"b\");\n" +
" }\n" +
"}\n" +
"class Y {}",
},
"----------\n" +
"1. ERROR in X.java (at line 5)\r\n" +
" new X().foo(new Y(), \"a\", \"b\");\r\n" +
" ^^^\n" +
"The method foo(Y, Object, String[]) is ambiguous for the type X\n" +
"----------\n"
//reference to foo is ambiguous, both method foo(Y,java.lang.Object,java.lang.String...) in X and method foo(java.lang.Object,java.lang.String...) in X match
);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=139931
public void test048() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" Y<String> [] foo() {\n" +
" return null;\n" +
" }\n" +
" void bar(Y... y) {\n" +
" }\n" +
" void fred() {\n" +
" bar(foo());\n" +
" bar((Y[])foo());\n" +
" Zork z;\n" +
" }\n" +
"}\n" +
"class Y<E> {\n" +
"}\n",
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" void bar(Y... y) {\n" +
" ^\n" +
"Y is a raw type. References to generic type Y<E> should be parameterized\n" +
"----------\n" +
"2. WARNING in X.java (at line 9)\n" +
" bar((Y[])foo());\n" +
" ^^^^^^^^^^\n" +
"Unnecessary cast from Y<String>[] to Y[]\n" +
"----------\n" +
"3. ERROR in X.java (at line 10)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=141704
public void test049() {
this.runConformTest(
new String[] {
"Y.java",
"public class Y extends X {\n" +
" public static void main(String[] args) {\n" +
" Y y = new Y();\n" +
" y.a(null, \"\");\n" +
" y.a(null);\n" +
" y.a(y, \"\");\n" +
" y.a(y);\n" +
" y.a(y, \"\", y, y);\n" +
" y.a(y, y, y);\n" +
" }\n" +
" @Override public void a(Object anObject, String aString, Object... args) { super.a(anObject, aString, this, args); }\n" +
" @Override public void a(Object anObject, Object... args) { super.a(anObject, this, args); }\n" +
"}\n" +
"class X implements I {\n" +
" public void a(Object anObject, String aString, Object... args) { System.out.print(1); }\n" +
" public void a(Object anObject, Object... args) { System.out.print(2); }\n" +
"}\n" +
"interface I {\n" +
" void a(Object anObject, String aString, Object... args);\n" +
" void a(Object anObject, Object... args);\n" +
"}\n",
},
"121212");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=141800
public void test050() {
this.runNegativeTest(
new String[] {
"X.java",
" import java.util.Arrays;\n" +
" public class X {\n" +
" public static void main( String args[] ) {\n" +
" Object test = new Object[] { \"Hello\", \"World\" };\n" +
" System.out.println(Arrays.asList(test));\n" +
" System.out.println(Arrays.asList((Object[])test)); // Warning here\n" +
" Zork z;\n" +
" }\n" +
"}",
},
// ensure no complaint about unnecessary cast
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=141800 - variation
public void test051() {
this.runConformTest(
new String[] {
"X.java",
" import java.util.Arrays;\n" +
" public class X {\n" +
" public static void main( String args[] ) {\n" +
" Object test = new Object[] { \"Hello\", \"World\" };\n" +
" System.out.print(Arrays.asList(test).size());\n" +
" System.out.println(Arrays.asList((Object[])test).size()); // Warning here\n" +
" }\n" +
"}",
},
"12");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=159607
public void test052() {
this.runNegativeTest(
new String[] {
"X.java",
"class X {\n" +
" void addChildren(Widget w) {\n" +
" if (w instanceof Composite) {\n" +
" Composite composite = (Composite) w;\n" +
" addAll((Widget[]) composite.getChildren());\n" +
" addAll(composite.getChildren());\n" +
" }\n" +
" Zork z;\n" +
" }\n" +
" void addAll(Widget... widgets) {\n" +
" }\n" +
"}\n" +
"\n" +
"class Widget {}\n" +
"class Control extends Widget {}\n" +
"class Composite extends Control {\n" +
" Control[] getChildren() {\n" +
" return null;\n" +
" }\n" +
"}", // =================,
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" addAll((Widget[]) composite.getChildren());\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Control[] to Widget[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=159607 - variation
public void test053() {
this.runNegativeTest(
new String[] {
"X.java",
"class X {\n" +
" void addChildren(Widget w) {\n" +
" if (w instanceof Composite) {\n" +
" Composite composite = (Composite) w;\n" +
" addAll((Control[]) composite.getChildren());\n" +
" addAll(composite.getChildren());\n" +
" }\n" +
" Zork z;\n" +
" }\n" +
" void addAll(Control... widgets) {\n" +
" }\n" +
"}\n" +
"\n" +
"class Widget {}\n" +
"class Control extends Widget {}\n" +
"class Composite extends Control {\n" +
" Control[] getChildren() {\n" +
" return null;\n" +
" }\n" +
"}", // =================,
},
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" addAll((Control[]) composite.getChildren());\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from Control[] to Control[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
public void test054() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" Zork z;\n" +
" public static void varargs(Object... args) {\n" +
" if (args == null) {\n" +
" System.out.println(\"args is null\");\n" +
" return;\n" +
" }\n" +
" if (args.length == 0) {\n" +
" System.out.println(\"args is of length 0\");\n" +
" return;\n" +
" }\n" +
"\n" +
" System.out.println(args.length + \" \" + args[0]);\n" +
" }\n" +
"\n" +
" public static void main(String[] args) {\n" +
" @SuppressWarnings(\"boxing\")\n" +
" Integer[] i = { 0, 1, 2, 3, 4 };\n" +
" varargs(i);\n" +
" varargs((Object[]) i);\n" +
" varargs((Object) i);\n" +
" varargs(i.clone());\n" +
" }\n" +
"}\n", // =================
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n" +
"2. WARNING in X.java (at line 19)\n" +
" varargs(i);\n" +
" ^^^^^^^^^^\n" +
"Type Integer[] of the last argument to method varargs(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n" +
"3. WARNING in X.java (at line 22)\n" +
" varargs(i.clone());\n" +
" ^^^^^^^^^^^^^^^^^^\n" +
"Type Integer[] of the last argument to method varargs(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n");
}
public void test055() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" private static int elementCount(Object... elements) {\n" +
" return elements == null ? 0 : elements.length;\n" +
" }\n" +
" public static void main(String... args) {\n" +
" System.out.print(\"null length array: \" + elementCount(null));\n" +
" System.out.print(\"/[null] length array: \" + elementCount((Object)null));\n" +
" System.out.print(\"/empty length array: \" + elementCount());\n" +
" System.out.println(\"/[a,b,c] length array: \" + elementCount(\"a\", \"b\", \"c\"));\n" +
" }\n" +
"}", // =================
},
"null length array: 0/[null] length array: 1/empty length array: 0/[a,b,c] length array: 3");
}
public void test056() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" Zork z;\n" +
" private static int elementCount(Object... elements) {\n" +
" return elements == null ? 0 : elements.length;\n" +
" }\n" +
" public static void main(String... args) {\n" +
" System.out.print(\"null length array: \" + elementCount(null));\n" +
" System.out.print(\"/[null] length array: \" + elementCount((Object)null));\n" +
" System.out.print(\"/empty length array: \" + elementCount());\n" +
" System.out.println(\"/[a,b,c] length array: \" + elementCount(\"a\", \"b\", \"c\"));\n" +
" }\n" +
"}", // =================
},
"----------\n" +
"1. ERROR in X.java (at line 2)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n" +
"2. WARNING in X.java (at line 7)\n" +
" System.out.print(\"null length array: \" + elementCount(null));\n" +
" ^^^^^^^^^^^^^^^^^^\n" +
"Type null of the last argument to method elementCount(Object...) doesn't exactly match the vararg parameter type. Cast to Object[] to confirm the non-varargs invocation, or pass individual arguments of type Object for a varargs invocation.\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=163889
public void test057() {
this.runNegativeTest(
new String[] {
"X.java",
"import java.lang.annotation.RetentionPolicy;\n" +
"\n" +
"public class X {\n" +
"\n" +
" void a(Enum<?>...enums) {}\n" +
"\n" +
" void b () {\n" +
" RetentionPolicy[] t = null;\n" +
" a(t);\n" +
" a((Enum<?>[])t);\n" +
" Zork z;\n" +
" }\n" +
"}\n", // =================
},
"----------\n" +
"1. WARNING in X.java (at line 10)\n" +
" a((Enum<?>[])t);\n" +
" ^^^^^^^^^^^^\n" +
"Unnecessary cast from RetentionPolicy[] to Enum<?>[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 11)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=162171
public void test058() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public void testPassingSubclassArrayAsVararg() {\n" +
" // The argument of type VarargsTest.Subclass[] should explicitly be\n" +
" // cast to VarargsTest.Parent[] for the invocation of the varargs\n" +
" // method processVararg(VarargsTest.Parent...) from type VarargsTest.\n" +
" // It could alternatively be cast to VarargsTest.Parent for a varargs\n" +
" // invocation\n" +
" processVararg(new Subclass[] {});\n" +
" }\n" +
"\n" +
" public void testPassingSubclassArrayAsVarargWithCast() {\n" +
" // Unnecessary cast from VarargsTest.Subclass[] to\n" +
" // VarargsTest.Parent[]\n" +
" processVararg((Parent[]) new Subclass[] {});\n" +
" processVararg(new Subclass[] {});\n" +
" Zork z;\n" +
" }\n" +
"\n" +
" private void processVararg(Parent... objs) {\n" +
" }\n" +
"\n" +
" class Parent {\n" +
" }\n" +
"\n" +
" class Subclass extends Parent {\n" +
" }\n" +
"}\n", // =================
},
"----------\n" +
"1. WARNING in X.java (at line 14)\n" +
" processVararg((Parent[]) new Subclass[] {});\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Unnecessary cast from X.Subclass[] to X.Parent[]\n" +
"----------\n" +
"2. ERROR in X.java (at line 16)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=170765
public void test059() {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public void foo() {\n" +
" Integer[] array = null;\n" +
" varargs(array);\n" +
" }\n" +
"\n" +
" public void varargs(Number... o) {\n" +
" }\n" +
" Zork z;\n" +
"}\n", // =================
},
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=186181
public void test060() {
Map options = getCompilerOptions();
options.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5);
options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
options.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_4);
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static String varargMethod( Object... objects ) {\r\n" +
" String s = \"\";\n" +
" for (Object object : objects)\n" +
" s += \",\" + object.toString();\n" +
" return s;\n" +
" }\n" +
"}",
},
"",
null,
true,
null,
options,
null);
// make sure that this file contains the varargs attribute
IClassFileReader reader = ToolFactory.createDefaultClassFileReader(OUTPUT_DIR + File.separator + "X.class", IClassFileReader.ALL);
IMethodInfo[] methodInfos = reader.getMethodInfos();
assertEquals("Wrong size", 2, methodInfos.length);
IMethodInfo methodInfo = null;
if (CharOperation.equals(methodInfos[0].getName(), "varargMethod".toCharArray())) {
methodInfo = methodInfos[0];
} else if (CharOperation.equals(methodInfos[1].getName(), "varargMethod".toCharArray())) {
methodInfo = methodInfos[1];
}
assertTrue("ACC_VARARGS is not set", (methodInfo.getAccessFlags() & ClassFileConstants.AccVarargs) == 0);
assertNotNull("Method varargMethodshould be there", methodInfo);
assertEquals("2", 2, methodInfo.getAttributeCount());
IClassFileAttribute[] attributes = methodInfo.getAttributes();
assertTrue("varargs attribute not found", CharOperation.equals(attributes[0].getAttributeName(), "Varargs".toCharArray())
|| CharOperation.equals(attributes[1].getAttributeName(), "Varargs".toCharArray()));
options.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5);
options.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5);
options.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_5);
this.runConformTest(
new String[] {
"UseVararg.java",
"public class UseVararg {\r\n" +
" public static void main( String[] args ) {\n" +
" String arg = \"SUCCESS\";\n" +
" String results = X.varargMethod(arg);\n" +
" System.out.println( results );\n" +
" }\r\n" +
"}",
},
",SUCCESS",
null,
false,
null,
options,
null);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=223427
public void test061() {
String expectedOutput =
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" Collections.addAll(constantClassSet, String.class, Object.class);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of Class<? extends Object> is created for a varargs parameter\n" +
"----------\n" +
"2. ERROR in X.java (at line 6)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n";
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
expectedOutput =
"----------\n" +
"1. ERROR in X.java (at line 6)\n" +
" Zork z;\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n";
}
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.*;\n" +
"public class X {\n" +
" public static void main(String[] args) {\n" +
" HashSet<Class<?>> constantClassSet = new HashSet<Class<?>>();\n" +
" Collections.addAll(constantClassSet, String.class, Object.class);\n" +
" Zork z;\n" +
" }\n" +
"}\n", // =================
},
expectedOutput);
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=328247
public void test062() throws Exception {
this.runConformTest(
new String[] {
"X.java",
"public class X {\r\n" +
" private static final String CONST = \"\";\r\n" +
"\r\n" +
" public static class A {\r\n" +
" A(Integer i, String... tab) {}\r\n" +
" }\r\n" +
" \r\n" +
" Object foo(final Float f) {\r\n" +
" return new A(new Integer(0), CONST) {\r\n" +
" public String toString() {\r\n" +
" return f.toString();\r\n" +
" }\r\n" +
" };\r\n" +
" }\r\n" +
"}",
},
"");
String expectedOutput =
" // Method descriptor #10 (LX;Ljava/lang/Integer;[Ljava/lang/String;Ljava/lang/Float;)V\n" +
" // Stack: 3, Locals: 5\n" +
" X$1(X arg0, java.lang.Integer $anonymous0, java.lang.String... $anonymous1, java.lang.Float arg3);\n";
checkDisassembledClassFile(OUTPUT_DIR + File.separator + "X$1.class", "X$1", expectedOutput);
}
//safe varargs support
public void test063() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
"Y.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"public class Y {\r\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList(T... a) {\n" +
" return null;\n" +
" }\n" +
"}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"public class X {\r\n" +
" public void bar() {\n" +
" List<? extends Class<?>> classes = Y.asList(String.class, Boolean.class);\n" +
" }\n" +
"}",
},
"",
null,
false,
null,
options,
null);
}
public void test064() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"public class X {\r\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList(T... a) {\n" +
" return null;\n" +
" }\n" +
" public void bar() {\n" +
" List<? extends Class<?>> classes = X.asList(String.class, Boolean.class);\n" +
" }\n" +
"}",
},
"",
null,
false,
null,
options,
null);
}
public void test065() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runConformTest(
new String[] {
"X.java",
"import java.util.ArrayList;\n" +
"import java.util.List;\n" +
"public class X {\r\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList(T... a) {\n" +
" return null;\n" +
" }\n" +
" public void bar() {\n" +
" List<List<String>> classes = X.asList(X.asList(\"Hello\", \"World\"));\n" +
" }\n" +
"}",
},
"",
null,
false,
null,
options,
null);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337093
public void test066() {
Map options = getCompilerOptions();
options.put(CompilerOptions.OPTION_ReportMissingOverrideAnnotationForInterfaceMethodImplementation, CompilerOptions.DISABLED);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.Collection;\n" +
"import java.util.Iterator;\n" +
"public class X {\n" +
" public static class IteratorChain<T> implements Iterator<T> {\n" +
" public IteratorChain(Collection<? extends T> a, Collection<? extends T> b, Collection<? extends T> ... collections) {\n" +
" }\n" +
" public boolean hasNext() {\n" +
" return false;\n" +
" }\n" +
" public T next() {\n" +
" return null;\n" +
" }\n" +
" public void remove() {\n" +
" throw new UnsupportedOperationException();\n" +
" }\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" new IteratorChain<Number>(null, null);\n" +
" }\n" +
"}\n", // =================
},
this.complianceLevel < ClassFileConstants.JDK1_7 ?
"----------\n" +
"1. WARNING in X.java (at line 18)\n" +
" new IteratorChain<Number>(null, null);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of Collection<? extends Number> is created for a varargs parameter\n" +
"----------\n":
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" public IteratorChain(Collection<? extends T> a, Collection<? extends T> b, Collection<? extends T> ... collections) {\n" +
" ^^^^^^^^^^^\n" +
"Type safety: Potential heap pollution via varargs parameter collections\n" +
"----------\n" +
"2. WARNING in X.java (at line 18)\n" +
" new IteratorChain<Number>(null, null);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of Collection<? extends Number> is created for a varargs parameter\n" +
"----------\n",
null,
true,
options);
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337799
public void test067() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList() { // Error, not varargs\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public <T> List<T> asList2(T ... a) { // error not static or final\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList3(T ... a) { // OK, varargs & static\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public final <T> List<T> asList4(T ... a) { // OK varargs & final\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public final static <T> List<T> asList5(T ... a) { // OK, varargs & static & final\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public int b;\n" +
"}\n" +
"interface I {\n" +
" @SafeVarargs\n" +
" public <T> List<T> asList(T ... t);\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" public static <T> List<T> asList() { // Error, not varargs\n" +
" ^^^^^^^^\n" +
"@SafeVarargs annotation cannot be applied to fixed arity method asList\n" +
"----------\n" +
"2. ERROR in X.java (at line 8)\n" +
" public <T> List<T> asList2(T ... a) { // error not static or final\n" +
" ^^^^^^^^^^^^^^^^\n" +
"@SafeVarargs annotation cannot be applied to non-final instance method asList2\n" +
"----------\n" +
"3. ERROR in X.java (at line 23)\n" +
" @SafeVarargs\n" +
" ^^^^^^^^^^^^\n" +
"The annotation @SafeVarargs is disallowed for this location\n" +
"----------\n" +
"4. ERROR in X.java (at line 28)\n" +
" public <T> List<T> asList(T ... t);\n" +
" ^^^^^^^^^^^^^^^\n" +
"@SafeVarargs annotation cannot be applied to non-final instance method asList\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337799
public void test067b() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" @SafeVarargs\n" +
" public X() { // Error, not varargs\n" +
" }\n" +
" @SafeVarargs\n" +
" public <T> X(T ... a) {\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" public X() { // Error, not varargs\n" +
" ^^^\n" +
"@SafeVarargs annotation cannot be applied to fixed arity method X\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337795 (make sure there is no warning if vararg parameter is reifiable)
public void test068() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" public <T> X(String ... a) {\n" +
" }\n" +
" public <T> X(int i, String ... a) {\n" +
" }\n" +
" public <T> List<T> asList(String ... a) {\n" +
" return null;\n" +
" }\n" +
" public <T> List<T> asList(Zork t, String ... a) {\n" +
" return null;\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" public <T> List<T> asList(Zork t, String ... a) {\n" +
" ^^^^\n" +
"Zork cannot be resolved to a type\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337795 (make sure there is a warning if vararg parameter is not reifiable)
public void test068b() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" public <T> X(T ... a) {\n" +
" }\n" +
" public <T> X(int i, T ... a) {\n" +
" }\n" +
" public <T> List<T> asList(T ... a) {\n" +
" return null;\n" +
" }\n" +
" public <T> List<T> asList(T t, T ... a) {\n" +
" return null;\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 3)\n" +
" public <T> X(T ... a) {\n" +
" ^\n" +
"Type safety: Potential heap pollution via varargs parameter a\n" +
"----------\n" +
"2. WARNING in X.java (at line 5)\n" +
" public <T> X(int i, T ... a) {\n" +
" ^\n" +
"Type safety: Potential heap pollution via varargs parameter a\n" +
"----------\n" +
"3. WARNING in X.java (at line 7)\n" +
" public <T> List<T> asList(T ... a) {\n" +
" ^\n" +
"Type safety: Potential heap pollution via varargs parameter a\n" +
"----------\n" +
"4. WARNING in X.java (at line 10)\n" +
" public <T> List<T> asList(T t, T ... a) {\n" +
" ^\n" +
"Type safety: Potential heap pollution via varargs parameter a\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337795
public void test068c() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" @SafeVarargs\n" +
" public <T> X(T ... a) {\n" +
" }\n" +
" @SafeVarargs\n" +
" public <T> X(int i, T ... a) {\n" +
" }\n" +
" @SafeVarargs\n" +
" public <T> List<T> asList(T ... a) {\n" +
" return null;\n" +
" }\n" +
" @SafeVarargs\n" +
" public <T> List<T> asList(T t, T ... a) {\n" +
" return null;\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" public <T> List<T> asList(T ... a) {\n" +
" ^^^^^^^^^^^^^^^\n" +
"@SafeVarargs annotation cannot be applied to non-final instance method asList\n" +
"----------\n" +
"2. ERROR in X.java (at line 14)\n" +
" public <T> List<T> asList(T t, T ... a) {\n" +
" ^^^^^^^^^^^^^^^^^^^^\n" +
"@SafeVarargs annotation cannot be applied to non-final instance method asList\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337795
public void test068d() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList(T ... a) {\n" +
" return null;\n" +
" }\n" +
" public static <T> List<T> asList2(T ... a) {\n" +
" return null;\n" +
" }\n" +
" List<? extends Class<?>> classes; \n" +
" {\n" +
" classes = X.asList(String.class, Boolean.class);\n" +
" classes = X.asList2(String.class, Boolean.class);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 7)\n" +
" public static <T> List<T> asList2(T ... a) {\n" +
" ^\n" +
"Type safety: Potential heap pollution via varargs parameter a\n" +
"----------\n" +
"2. WARNING in X.java (at line 13)\n" +
" classes = X.asList2(String.class, Boolean.class);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of Class<? extends Object&Serializable&Comparable<?>> is created for a varargs parameter\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=337795 (test effect of SuppressWarnings (should suppress at declaration site, but not at call site)
public void test068e() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_7) return;
this.runConformTest(
new String[] {
"java/lang/SafeVarargs.java",
"package java.lang;\n" +
"import java.lang.annotation.Retention;\n" +
"import java.lang.annotation.Target;\n" +
"import static java.lang.annotation.RetentionPolicy.RUNTIME;\n" +
"import static java.lang.annotation.ElementType.CONSTRUCTOR;\n" +
"import static java.lang.annotation.ElementType.METHOD;\n" +
"\n" +
"@Retention(value=RUNTIME)\n" +
"@Target(value={CONSTRUCTOR,METHOD})\n" +
"public @interface SafeVarargs {}",
},
"");
Map options = getCompilerOptions();
options.put(JavaCore.COMPILER_PB_UNCHECKED_TYPE_OPERATION, JavaCore.ERROR);
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.List;\n" +
"public class X {\n" +
" @SafeVarargs\n" +
" public static <T> List<T> asList(T ... a) {\n" +
" return null;\n" +
" }\n" +
" @SuppressWarnings(\"unchecked\")\n" +
" public static <T> List<T> asList2(T ... a) {\n" +
" return null;\n" +
" }\n" +
" List<? extends Class<?>> classes; \n" +
" {\n" +
" classes = X.asList(String.class, Boolean.class);\n" +
" classes = X.asList2(String.class, Boolean.class);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. WARNING in X.java (at line 14)\n" +
" classes = X.asList2(String.class, Boolean.class);\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"Type safety: A generic array of Class<? extends Object&Serializable&Comparable<?>> is created for a varargs parameter\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346042
public void test069() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
this.runNegativeTest(
new String[] {
"p1/B.java",
"package p1;\n" +
"class A {\n" +
"}\n" +
"public class B extends A {\n" +
" public void foo(A... args) {\n" +
" }\n" +
"}\n",
"p2/C.java",
"package p2;\n" +
"import p1.B;\n" +
"public class C {\n" +
"\n" +
" public static final void main(String[] args) {\n" +
" (new B()).foo(new B(), new B());\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in p2\\C.java (at line 6)\n" +
" (new B()).foo(new B(), new B());\n" +
" ^^^\n" +
"The method foo(A...) of type B is not applicable as the formal varargs element type A is not accessible here\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346038
public void test070() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void foo(int ...i) {}\n" +
" public static void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"Done");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test070_tolerate() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
Map options = getCompilerOptions();
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel < ClassFileConstants.JDK1_7) {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void foo(int ...i) {}\n" +
" public static void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" foo(1, 2, 3);\n" +
" ^^^\n" +
"The method foo(int[]) is ambiguous for the type X\n" +
"----------\n",
null, true, options);
} else {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void foo(int ...i) {}\n" +
" public static void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"Done",
null, true, null, options, null);
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test070_tolerate2() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
Map options = getCompilerOptions();
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
this.runNegativeTest(
new String[] {
"X.java",
"import java.util.Arrays;\n" +
"public class X {\n" +
" public static void test(int... a) {\n" +
" System.out.println(Arrays.toString(a));\n}\n" +
" public static <T> void test(Object... a) {\n" +
" System.out.println(Arrays.toString(a));\n}\n" +
" public static void main(String[] args) {\n" +
" test(1);\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 10)\n" +
" test(1);\n" +
" ^^^^\n" +
"The method test(int[]) is ambiguous for the type X\n" +
"----------\n",
null, true, options);
} else {
this.runConformTest(
new String[] {
"X.java",
"import java.util.Arrays;\n" +
"public class X {\n" +
" public static void test(int... a) {\n" +
" System.out.println(Arrays.toString(a));\n}\n" +
" public static <T> void test(Object... a) {\n" +
" System.out.println(Arrays.toString(a));\n}\n" +
" public static void main(String[] args) {\n" +
" test(1);\n" +
" }\n" +
"}\n"
},
"[1]",
null, true, null, options, null);
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346038
public void test070a() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static <T> void foo(int ...i) {}\n" +
" public static <T> void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"Done");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test070a_tolerate() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
Map options = getCompilerOptions();
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel < ClassFileConstants.JDK1_7) {
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static <T> void foo(int ...i) {}\n" +
" public static <T> void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" foo(1, 2, 3);\n" +
" ^^^\n" +
"The method foo(int[]) is ambiguous for the type X\n" +
"----------\n",
null, true, options);
} else {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static <T> void foo(int ...i) {}\n" +
" public static <T> void foo(double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3);\n" +
" System.out.println (\"Done\");\n" +
" }\n" +
"}\n"
},
"Done",
null, true, null, options, null);
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346038
public void test070b() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void foo(int ...i) {}\n" +
" public static void foo(double d1, double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3); // foo NOT flagged ambiguous\n" +
" }\n" +
"}\n"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test070b_tolerate() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
String[] src = new String[] {
"X.java",
"public class X {\n" +
" public static void foo(int ...i) {}\n" +
" public static void foo(double d1, double...d) {}\n" +
" public static void main(String[] args) {\n" +
" foo(1, 2, 3); // foo NOT flagged ambiguous\n" +
" }\n" +
"}\n"
};
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
this.runConformTest(
src,
"");
} else {
this.runNegativeTest(
src,
"----------\n" +
"1. ERROR in X.java (at line 5)\n" +
" foo(1, 2, 3); // foo NOT flagged ambiguous\n" +
" ^^^\n" +
"The method foo(int[]) is ambiguous for the type X\n" +
"----------\n");
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346038
public void test070c() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" public static void main(String[] s) {\n" +
" count(1);\n" +
" count(1, 1);\n" +
" count(1, 1, 1);\n" +
" }\n" +
" public static void count(int ... values) {}\n" +
" public static void count(int i, int ... values) {}\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 3)\n" +
" count(1);\n" +
" ^^^^^\n" +
"The method count(int[]) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 4)\n" +
" count(1, 1);\n" +
" ^^^^^\n" +
"The method count(int[]) is ambiguous for the type X\n" +
"----------\n" +
"3. ERROR in X.java (at line 5)\n" +
" count(1, 1, 1);\n" +
" ^^^^^\n" +
"The method count(int[]) is ambiguous for the type X\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346038
public void test070d() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runNegativeTest(
new String[] {
"X.java",
"public class X {\n" +
" void b(boolean b, Object... o) {}\n" +
" void b(Boolean... o) {}\n" +
" void c(boolean b, boolean b2, Object... o) {}\n" +
" void c(Boolean b, Object... o) {}\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.b(true);\n" +
" x.b(true, false);\n" +
" }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 8)\r\n" +
" x.b(true);\r\n" +
" ^\n" +
"The method b(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n" +
"2. ERROR in X.java (at line 9)\r\n" +
" x.b(true, false);\r\n" +
" ^\n" +
"The method b(boolean, Object[]) is ambiguous for the type X\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=346039
public void test071() { // check behaviour of Scope.mostSpecificMethodBinding()
this.runConformTest(
new String[] {
"X.java",
"public class X implements IClass{\n" +
" X(IClass c, X t, IType... args) {\n" +
" System.out.println (\"1\");\n" +
" }\n" +
" X(IClass c, IType... args) {\n" +
" System.out.println (\"2\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" IClass c = null;\n" +
" X t = null;\n" +
" X t2 = new X(c, t); // incorrectly flagged ambiguous\n" +
" }\n" +
"}\n" +
"interface IType{}\n" +
"interface IClass extends IType{}\n"
},
"1");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=383780
public void test071_tolerate() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
String[] src =
new String[] {
"X.java",
"public class X implements IClass{\n" +
" X(IClass c, X t, IType... args) {\n" +
" System.out.println (\"1\");\n" +
" }\n" +
" X(IClass c, IType... args) {\n" +
" System.out.println (\"2\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" IClass c = null;\n" +
" X t = null;\n" +
" X t2 = new X(c, t); // incorrectly flagged ambiguous\n" +
" }\n" +
"}\n" +
"interface IType{}\n" +
"interface IClass extends IType{}\n"
};
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel >= ClassFileConstants.JDK1_7) {
this.runConformTest(
src,
"1");
} else {
this.runNegativeTest(
src,
"----------\n" +
"1. ERROR in X.java (at line 11)\n" +
" X t2 = new X(c, t); // incorrectly flagged ambiguous\n" +
" ^^^^^^^^^^^\n" +
"The constructor X(IClass, X, IType[]) is ambiguous\n" +
"----------\n");
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=364672
public void test072() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" private class Z {}\n" +
" public void foo() {\n" +
" Z[] zs = null;\n" +
" Y.bar(zs, new Z());\n" +
" }\n" +
" public static void main(String[] args) {}\n" +
"}",
"Y.java",
"public class Y {\n" +
" public native static <T> void bar(T[] t, T t1, T... t2);\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=364672
public void test073() {
this.runConformTest(
new String[] {
"X.java",
"public class X {\n" +
" public static final String CONSTANT = \"\";\n" +
" private static class A {\n" +
" A(String s, String s2, String s3, A... a) {}\n" +
" }\n" +
" private static class B extends A {\n" +
" B(String s, String s2) {\n" +
" super(s, s2, CONSTANT);\n" +
" }\n" +
" }\n" +
" private static void foo(Object o, A ... a) {\n" +
" }\n" +
" private static B bar() {\n" +
" return null;\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" Object o = null;\n" +
" foo(o, bar(), bar());\n" +
" }\n" +
"}"
},
"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=364672
public void test074() throws Exception {
this.runNegativeTest(
new String[] {
"p1/B.java",
"package p1;\n" +
"class A {}\n" +
"public class B extends A {\n" +
" public B(A... args) {}\n" +
" public B() {}\n" +
"}\n",
"p2/C.java",
"package p2;\n" +
"import p1.B;\n" +
"public class C {\n" +
" public static final void main(String[] args) {\n" +
" new B(new B(), new B());\n" +
" }\n" +
"}\n"
},
"----------\n" +
"1. ERROR in p2\\C.java (at line 5)\n" +
" new B(new B(), new B());\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^\n" +
"The constructor B(A...) of type B is not applicable as the formal varargs element type A is not accessible here\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=382469
public void testBug382469() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
String[] src =
new String[] {
"X.java",
"public class X {\n" +
" private static void bar(Object... objs) {\n" +
" System.out.println (\"1\");\n" +
" }\n" +
" private static void bar(int intValue, Object... objs) {\n" +
" System.out.println (\"2\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" bar(5);\n" +
" }\n" +
"}\n"
};
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel < ClassFileConstants.JDK1_7) {
this.runConformTest(
src,
"2");
} else {
this.runNegativeTest(
src,
"----------\n" +
"1. WARNING in X.java (at line 5)\n" +
" private static void bar(int intValue, Object... objs) {\n" +
" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
"The method bar(int, Object...) from the type X is never used locally\n" +
"----------\n" +
"2. ERROR in X.java (at line 9)\n" +
" bar(5);\n" +
" ^^^\n" +
"The method bar(Object[]) is ambiguous for the type X\n" +
"----------\n");
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=386361
public void testBug386361() throws Exception {
if (this.complianceLevel < ClassFileConstants.JDK1_5) return;
String[] src =
new String[] {
"X.java",
"public class X {\n" +
" public static void test(int i, Object... objects) {\n" +
" System.out.println (\"1\");\n" +
" }\n" +
" public static void test(Object... objects) {\n" +
" System.out.println (\"2\");\n" +
" }\n" +
" public static void main(String args[]) {\n" +
" test(1,\"test\");\n" +
" }\n" +
"}\n"
};
try {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "true");
if (this.complianceLevel < ClassFileConstants.JDK1_7) {
this.runConformTest(
src,
"1");
} else {
this.runNegativeTest(
src,
"----------\n" +
"1. ERROR in X.java (at line 9)\n" +
" test(1,\"test\");\n" +
" ^^^^\n" +
"The method test(int, Object[]) is ambiguous for the type X\n" +
"----------\n");
}
} finally {
System.setProperty("tolerateIllegalAmbiguousVarargsInvocation", "false");
}
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=426678, [1.8][compiler] Another issue with vararg type element accessibility
public void test426678() {
runNegativeTest(
new String[] {
"X.java",
"import p.*;\n" +
"public class X {\n" +
" public static void main(String argv[]) {\n" +
" new B().foo(null, null);\n" +
" }\n" +
"}\n",
"p/B.java",
"package p;\n" +
"class A {\n" +
"}\n" +
"public class B extends A {\n" +
" public void foo(A ... o) { System.out.println(\"MB:A\"); }\n" +
" public void foo(Object... o) { System.out.println(\"MB:O\"); }\n" +
"}\n",
},
"----------\n" +
"1. ERROR in X.java (at line 4)\n" +
" new B().foo(null, null);\n" +
" ^^^\n" +
"The method foo(A...) of type B is not applicable as the formal varargs element type A is not accessible here\n" +
"----------\n"); // check and adjust,
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=436474, [codegen]Problem with varargs and List.toString
public void test436474() {
runConformTest(
new String[] {
"Scratch.java",
"import java.util.Arrays;\n" +
"import java.util.List;\n" +
"public class Scratch {\n" +
" public static void vararg(String... strs) {\n" +
" System.out.println(strs[0]);\n" +
" }\n" +
" \n" +
" public static void main(String[] args) {\n" +
" List<String> l = Arrays.asList(\"a\");\n" +
" vararg(l.toArray(new String[0]));\n" +
" }\n" +
"}",
},
"a");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=437973, [1.8][compiler] Missing implementation of JLS 15.12.2.5 Third Bullet - Part 2
public void test437973() {
runConformTest(
new String[] {
"X.java",
"class W {}\n" +
"class Y extends W {}\n" +
"class Z extends Y {}\n" +
"class A{}\n" +
"public class X {\n" +
" void foo(String format, Object ... args) {\n" +
" System.out.println(\"foo Object Varargs\");\n" +
" }\n" +
" void foo(String ... s) {\n" +
" System.out.println(\"foo String Varargs\");\n" +
" }\n" +
" void foo1(Z ... z) {\n" +
" System.out.println(\"foo1 Z varargs\");\n" +
" }\n" +
" void foo1(Z z, Y ... y) {\n" +
" System.out.println(\"foo1 Y varargs\");\n" +
" }\n" +
" void foo2(Z z, W ... w) {\n" +
" System.out.println(\"foo2 W varargs\");\n" +
" }\n" +
" void foo2(Z z, Y ... y) {\n" +
" System.out.println(\"foo2 Y varargs\");\n" +
" }\n" +
" void foo3(A a, W ... w) {\n" +
" System.out.println(\"foo3 W varargs\");\n" +
" }\n" +
" void foo3(A a, Y ... y) {\n" +
" System.out.println(\"foo3 Y varargs\");\n" +
" }\n" +
" void foo4(W w) {\n" +
" System.out.println(\"foo4 W\");\n" +
" }\n" +
" void foo4(W w, A ... a) {\n" +
" System.out.println(\"foo4 A varargs\");\n" +
" }\n" +
" void foo5(W w) {\n" +
" System.out.println(\"foo5 W\");\n" +
" }\n" +
" void foo5(W ... w) {\n" +
" System.out.println(\"foo5 W varargs\");\n" +
" }\n" +
" void foo6(W ... w) {\n" +
" System.out.println(\"foo6 W varargs\");\n" +
" }\n" +
" void foo6(Y ... y) {\n" +
" System.out.println(\"foo6 Y varargs\");\n" +
" }\n" +
" void foo7(String format, Object ... args) {\n" +
" System.out.println(\"foo7 Object Varargs\");\n" +
" }\n" +
" void foo8(String ... s) {\n" +
" System.out.println(\"foo8 String Varargs\");\n" +
" }\n" +
" void bar() {\n" +
" foo(\"f\");\n" + // Original Test Case : Error without fix
" foo(\"f\", 12);\n" +
" foo1(new Z());\n" +
" foo2(new Z());\n" +
" foo3(new A());\n" +
" foo4(new W());\n" +
" foo5(new W());\n" +
" foo6(new W());\n" +
" foo6(new Y());\n" +
" foo7(\"f\", 12);\n" +
" foo8(\"f\");\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.bar();\n" +
" }\n" +
"}\n",
},
"foo String Varargs\n" +
"foo Object Varargs\n" +
"foo1 Z varargs\n" +
"foo2 Y varargs\n" +
"foo3 Y varargs\n" +
"foo4 W\n" +
"foo5 W\n" +
"foo6 W varargs\n" +
"foo6 Y varargs\n" +
"foo7 Object Varargs\n" +
"foo8 String Varargs");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=437973, [1.8][compiler] Missing implementation of JLS 15.12.2.5 Third Bullet - Part 2
public void test437973a() {
if (this.complianceLevel < ClassFileConstants.JDK1_8)
return;
runConformTest(
new String[] {
"X.java",
"class W {}\n" +
"class Y extends W {}\n" +
"public class X {\n" +
" void foo(W w, Y ... y) {\n" +
" System.out.println(\"foo Y varargs\");\n" +
" }\n" +
" void foo(W ... w) {\n" +
" System.out.println(\"foo W varargs\");\n" +
" }\n" +
" void bar() {\n" +
" foo(new W(), new W(), new W());\n" +
//Error with 1.8 without fix for all these three test cases.
" foo(new Y(), new Y(), new Y());\n" +
" foo(new W());\n" +
" foo(new Y());\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" X x = new X();\n" +
" x.bar();\n" +
" }\n" +
"}\n"},
"foo W varargs\n" +
"foo Y varargs\n" +
"foo Y varargs\n" +
"foo Y varargs");
}
//https://bugs.eclipse.org/bugs/show_bug.cgi?id=437973, [1.8][compiler] Missing implementation of JLS 15.12.2.5 Third Bullet - Part 2
//The parameter of one method is not a subtype of the other.
public void test437973b() {
if (this.complianceLevel < ClassFileConstants.JDK1_8)
return;
runNegativeTest(
new String[] {
"X.java",
"class W {}\n" +
"class A {}\n" +
"public class X {\n" +
" void foo(W ... w) {}\n" +
" void foo(W w, A ... a) {}\n" +
" void bar() {\n" +
" foo(new W()); // 1.8 Error: Ambiguous method error\n" +
" }\n" +
" public static void main(String[] args) {}\n" +
"}\n"},
"----------\n" +
"1. ERROR in X.java (at line 7)\n" +
" foo(new W()); // 1.8 Error: Ambiguous method error\n" +
" ^^^\n" +
"The method foo(W[]) is ambiguous for the type X\n" +
"----------\n");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=437973, [1.8][compiler] Missing implementation of JLS 15.12.2.5 Third Bullet - Part 2
// Lambda functions
public void test437973c() {
if (this.complianceLevel < ClassFileConstants.JDK1_8)
return;
runNegativeTest(
new String[] {
"X.java",
"class W {}\n" +
"class Y extends W {}\n" +
"class Z extends Y {}\n" +
"class A{}\n" +
"\n" +
"interface I1 {\n" +
" void foo (Y ... y); \n" +
" default void foo (Y y, W ... w) {}\n" +
"}\n" +
"\n" +
"public class X {\n" +
" void bar() {\n" +
" I1 i1 = (x) -> {};\n" +
" i1.foo(new Y());\n" +
" }\n" +
"}\n"},"");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=437973, [1.8][compiler] Missing implementation of JLS 15.12.2.5 Third Bullet - Part 2
// Original Test Case - Comment 0
public void test437973d() {
runConformTest(
new String[] {
"Junk16.java",
"public class Junk16 {\n" +
" public static String junk(String format, Object... args) {\n" +
" System.out.println(\"junk 1\");\n" +
" return null;\n" +
" }\n" +
" public static String junk(String... s) {\n" +
" System.out.println(\"junk 2\");\n" +
" return null;\n" +
" }\n" +
" public static void main(String[] args) {\n" +
" // COMPILE ERROR IN ECLIPSE (none in JDK) WITHOUT FIX\n" +
" junk(\"fred\");\n" +
" //NO COMPILE ERROR\n" +
" junk(\"fred\", 12);\n" +
" }\n" +
"}\n"},
"junk 2\n" +
"junk 1");
}
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=443596, [1.8][compiler] Failure for overload resolution in case of Generics and Varags
public void _test443596() {
runConformTest(
new String[] {
"Collections2.java",
"public final class Collections2 {\n" +
" static interface Predicate<T> { boolean test(T object); }\n" +
" public static <T> Predicate<T> in(Predicate<? extends T> arg) { return null; }\n" +
" public static <T> Predicate<T> and(Predicate<? super T>... arg) { return null; }\n" +
" public static <T> Predicate<T> and(Predicate<? super T> arg0, Predicate<? super T> arg1) { return null; }\n" +
" static class FilteredCollection<E> {\n" +
" Predicate<? super E> predicate;\n" +
" public void error(Predicate<?> arg) { and(predicate, in(arg)); } // no compile\n" +
" }\n" +
"}\n"});
}
}
