1 files changed, 43 insertions, 0 deletions
diff --git a/test/BlocksRuntime/nullblockisa.c b/test/BlocksRuntime/nullblockisa.c
new file mode 100644
index 000000000000..ba0282e82084
--- /dev/null
+++ b/test/BlocksRuntime/nullblockisa.c
@@ -0,0 +1,43 @@
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+//
+//  nullblockisa.m
+//  testObjects
+//
+//  Created by Blaine Garst on 9/24/08.
+//
+// CONFIG rdar://6244520
+
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <Block_private.h>
+
+
+void check(void (^b)(void)) {
+    struct _custom {
+        struct Block_layout layout;
+        struct Block_byref *innerp;
+    } *custom  = (struct _custom *)(void *)(b);
+    //printf("block is at %p, size is %lx, inner is %p\n", (void *)b, Block_size(b), innerp);
+    if (custom->innerp->isa != (void *)NULL) {
+        printf("not a NULL __block isa\n");
+        exit(1);
+    }
+    return;
+}
+        
+int main(int argc, char *argv[]) {
+
+   __block int i;
+   
+   check(^{ printf("%d\n", ++i); });
+   printf("%s: success\n", argv[0]);
+   return 0;
+}
+