1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/block-decl-merging.c b/test/CodeGen/block-decl-merging.c
new file mode 100644
index 000000000000..1e7a9f4e92cb
--- /dev/null
+++ b/test/CodeGen/block-decl-merging.c
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple i386-apple-darwin10 -fblocks -emit-llvm -o - %s | \
+// RUN:   FileCheck %s
+
+// CHECK: @_NSConcreteGlobalBlock = extern_weak global
+extern void * _NSConcreteStackBlock[32] __attribute__((weak_import));
+// CHECK: @_NSConcreteStackBlock = extern_weak global
+extern void * _NSConcreteGlobalBlock[32] __attribute__((weak_import));
+extern void _Block_object_dispose(const void *, const int) __attribute__((weak_import));
+// CHECK: declare extern_weak void @_Block_object_assign
+extern void _Block_object_assign(void *, const void *, const int) __attribute__((weak_import));
+// CHECK: declare extern_weak void @_Block_object_dispose
+
+void *x = ^(){};
+
+void f1(void (^a0)(void));
+
+void f0() {
+  __block int x;
+  f1(^(void){ x = 1; });
+}