1 files changed, 31 insertions, 0 deletions
diff --git a/gcc/testsuite/obj-c++.dg/duplicate-class-1.mm b/gcc/testsuite/obj-c++.dg/duplicate-class-1.mm
new file mode 100644
index 000000000..9476533d1
--- /dev/null
+++ b/gcc/testsuite/obj-c++.dg/duplicate-class-1.mm
@@ -0,0 +1,31 @@
+/* Contributed by Nicola Pero <nicola.pero@meta-innovation.com>, November 2010.  */
+/* { dg-do compile } */
+
+/* Test that a duplicated @implementation for the same class does not
+   crash the compiler.  */
+
+@interface Test
+{
+  Class isa;
+}
+- (int) test;
+@end
+
+@implementation Test
+- (int) test
+{
+  return 4;
+}
+@end
+
+/* The most likely cause is that the programmer meant this to be a
+   category, so check what happens if we have some different methods
+   in there.  */
+@implementation Test /* { dg-error "reimplementation of class .Test." } */
+- (int) test2
+{
+  return [self test];
+}
+@end
+/* { dg-warning "incomplete implementation" "" { target *-*-* } 29 } */
+/* { dg-warning "not found" "" { target *-*-* } 29 } */