1 files changed, 44 insertions, 0 deletions
diff --git a/BlocksRuntime/tests/recursiveassign.c b/BlocksRuntime/tests/recursiveassign.c
new file mode 100644
index 000000000000..f0070cbe5c93
--- /dev/null
+++ b/BlocksRuntime/tests/recursiveassign.c
@@ -0,0 +1,44 @@
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+/*
+ *  recursiveassign.c
+ *  testObjects
+ *
+ *  Created by Blaine Garst on 12/3/08.
+ *
+ */
+
+// CONFIG  rdar://6639533
+
+// The compiler is prefetching x->forwarding before evaluting code that recomputes forwarding and so the value goes to a place that is never seen again.
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <Block.h>
+
+
+int main(int argc, char* argv[]) {
+    
+    __block void (^recursive_copy_block)(int) = ^(int arg) { printf("got wrong Block\n"); exit(1); };
+    
+    
+    recursive_copy_block = Block_copy(^(int i) {
+        if (i > 0) {
+            recursive_copy_block(i - 1);
+        }
+        else {
+            printf("done!\n");
+        }
+    });
+    
+    
+    recursive_copy_block(5);
+    
+    printf("%s: Success\n", argv[0]);
+    return 0;
+}
+