1 files changed, 33 insertions, 0 deletions
diff --git a/BlocksRuntime/tests/k-and-r.c b/BlocksRuntime/tests/k-and-r.c
new file mode 100644
index 000000000000..16b9cc643b50
--- /dev/null
+++ b/BlocksRuntime/tests/k-and-r.c
@@ -0,0 +1,33 @@
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+//  -*- mode:C; c-basic-offset:4; tab-width:4; intent-tabs-mode:nil;  -*-
+// CONFIG error: incompatible block pointer types assigning
+
+#import <stdio.h>
+#import <stdlib.h>
+
+int main(int argc, char *argv[]) {
+#ifndef __cplusplus
+    char (^rot13)();
+    rot13 = ^(char c) { return (char)(((c - 'a' + 13) % 26) + 'a'); };
+    char n = rot13('a');
+    char c = rot13('p');
+    if ( n != 'n' || c != 'c' ) {
+        printf("%s: rot13('a') returned %c, rot13('p') returns %c\n", argv[0], n, c);
+        exit(1);
+    }
+#else
+// yield characteristic error message for C++
+#error incompatible block pointer types assigning
+#endif
+#ifndef __clang__
+// yield characteristic error message for C++
+#error incompatible block pointer types assigning
+#endif
+    printf("%s: success\n", argv[0]);
+    exit(0);
+}