runtime/RedefineTests/RedefineRunningMethodsWithResolutionErrors.java

61             MethodVisitor mv;
63             mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "m", "()V", null, null);
64             mv.visitCode();
73                 createThrowRuntimeExceptionCode(mv, "The redefined method was called");
75                 createMethodBody(mv);
77             mv.visitMaxs(3, 0);
78             mv.visitEnd();
84     private static void createMethodBody(MethodVisitor mv) {
88         createLoadNonExistentClassCode(mv, classExists);
91         mv.visitMethodInsn(INVOKESTATIC, "RedefineRunningMethodsWithResolutionErrors", "redefine", "()V");
94         createLoadNonExistentClassCode(mv, classExists);
97         mv.visitInsn(RETURN);
99         mv.visitFrame(F_SAME, 0, new Object[0], 0, new Object[0]);
100         mv.visitLabel(classExists);
102         createThrowRuntimeExceptionCode(mv, "Loaded class that shouldn't exist (\"NonExistentClass\")");
105     private static void createLoadNonExistentClassCode(MethodVisitor mv, Label classExists) {
109         mv.visitTryCatchBlock(tryLoadBegin, tryLoadEnd, catchLoadBlock, "java/lang/NoClassDefFoundError");
112         mv.visitLabel(tryLoadBegin);
113         mv.visitMethodInsn(INVOKESTATIC, "NonExistentClass", "nonExistentMethod", "()V");
114         mv.visitLabel(tryLoadEnd);
117         mv.visitJumpInsn(GOTO, classExists);
119         mv.visitFrame(F_SAME1, 0, new Object[0], 1, new Object[] { "java/lang/NoClassDefFoundError" });
120         mv.visitLabel(catchLoadBlock);
123         mv.visitInsn(POP);
126     private static void createThrowRuntimeExceptionCode(MethodVisitor mv, String msg) {
127         mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
128         mv.visitInsn(DUP);
129         mv.visitLdcInsn(msg);
130         mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException", "<init>", "(Ljava/lang/String;)V");
131         mv.visitInsn(ATHROW);