Block rewriting bug. Don't take address of captured

byref variables again when passing them to inner blocks. 
// rdar://9006279

llvm-svn: 125690

1 files changed, 35 insertions, 0 deletions

diff --git a/clang/test/Rewriter/rewrite-captured-nested-bvar.c b/clang/test/Rewriter/rewrite-captured-nested-bvar.c
new file mode 100644
index 00000000000..a48de4bbeae
--- /dev/null
+++ b/clang/test/Rewriter/rewrite-captured-nested-bvar.c
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -x c -fblocks -fms-extensions -rewrite-objc %s -o %t-rw.cpp
+// RUN: FileCheck --input-file=%t-rw.cpp %s
+// rdar://9006279
+
+void q(void (^p)(void)) {
+    p();
+}
+
+void f() {
+    __block char BYREF_VAR_CHECK = 'a';
+    __block char d = 'd';
+    q(^{
+        q(^{
+            __block char e = 'e';
+            char l = 'l';
+            BYREF_VAR_CHECK = 'b';
+            d = 'd';
+            q(^{
+                 e = '1';
+                 BYREF_VAR_CHECK = '2';
+                 d = '3';
+               }
+             );
+        });
+    });
+}
+
+int main() {
+    f();
+    return 0;
+}
+
+// CHECK 2: (__Block_byref_BYREF_VAR_CHECK_0 *)BYREF_VAR_CHECK
+// CHECK: (__Block_byref_BYREF_VAR_CHECK_0 *)&BYREF_VAR_CHECK
+// CHECK: (struct __Block_byref_BYREF_VAR_CHECK_0 *)&BYREF_VAR_CHECK, (struct __Block_byref_d_1 *)&d, 570425344));