1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/testsuite/objc.dg/const-str-10.m b/gcc/testsuite/objc.dg/const-str-10.m
new file mode 100644
index 00000000000..6e6d86a8860
--- /dev/null
+++ b/gcc/testsuite/objc.dg/const-str-10.m
@@ -0,0 +1,29 @@
+/* APPLE LOCAL file 4149909 */
+/* Test if ObjC constant string layout is checked properly, regardless of how
+   constant string classes get derived.  */
+/* Contributed by Ziemowit Laski <zlaski@apple.com>  */
+
+/* { dg-options "-fnext-runtime -fno-constant-cfstrings" } */
+/* { dg-do compile { target *-*-darwin* } } */
+
+#include <objc/Object.h>
+
+@interface NSString: Object
+@end
+
+@interface NSSimpleCString : NSString {
+@protected
+    char *bytes;
+    unsigned int numBytes;
+}
+@end
+    
+@interface NSConstantString : NSSimpleCString
+@end
+
+extern struct objc_class _NSConstantStringClassReference;
+
+const NSConstantString *appKey = @"MyApp";
+
+/* { dg-final { scan-assembler ".section __OBJC, __cstring_object" } } */
+/* { dg-final { scan-assembler ".long\t__NSConstantStringClassReference\n\t.long\t.*\n\t.long\t5\n\t.data" } } */