1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGenObjC/block-byref-debuginfo.m b/test/CodeGenObjC/block-byref-debuginfo.m
new file mode 100644
index 000000000000..88a8d8d50c1f
--- /dev/null
+++ b/test/CodeGenObjC/block-byref-debuginfo.m
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -g -triple x86_64-apple-darwin -emit-llvm %s -o - | FileCheck %s
+
+// rdar://problem/14386148
+// Test that the foo is aligned at an 8 byte boundary in the DWARF
+// expression (256) that locates it inside of the byref descriptor:
+// CHECK: metadata !"foo", i32 0, i64 {{[0-9]+}}, i64 64, i64 256, i32 0, metadata
+
+struct Foo {
+  unsigned char *data;
+};
+int func() {
+  __attribute__((__blocks__(byref))) struct Foo foo;
+  return 0;
+}