1 files changed, 48 insertions, 0 deletions
diff --git a/test/Layout/ms_struct-bitfields.c b/test/Layout/ms_struct-bitfields.c
new file mode 100644
index 0000000..9cb455b
--- /dev/null
+++ b/test/Layout/ms_struct-bitfields.c
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -emit-llvm-only -triple armv7-apple-darwin -fdump-record-layouts %s 2>/dev/null \
+// RUN:            | FileCheck %s
+
+// rdar://22275433
+
+#pragma ms_struct on
+
+union A {
+  unsigned long long x : 32;
+  unsigned long long y : 32;
+} a;
+// CHECK:*** Dumping AST Record Layout
+// CHECK-NEXT:        0 | union A
+// CHECK-NEXT:   0:0-31 |   unsigned long long x
+// CHECK-NEXT:   0:0-31 |   unsigned long long y
+// CHECK-NEXT:          | [sizeof=8, align=1]
+
+union B {
+  __attribute__((aligned(4)))
+  unsigned long long x : 32;
+  unsigned long long y : 32;
+} b;
+// CHECK:*** Dumping AST Record Layout
+// CHECK-NEXT:       0 | union B
+// CHECK-NEXT:  0:0-31 |   unsigned long long x
+// CHECK-NEXT:  0:0-31 |   unsigned long long y
+// CHECK-NEXT:         | [sizeof=8, align=1]
+
+union C {
+  unsigned long long : 0;
+  unsigned short y : 8;
+} c;
+// CHECK:*** Dumping AST Record Layout
+// CHECK-NEXT:       0 | union C
+// CHECK-NEXT:     0:- |   unsigned long long
+// CHECK-NEXT:   0:0-7 |   unsigned short y
+// CHECK-NEXT:         | [sizeof=2, align=1]
+
+union D {
+  unsigned long long : 0;
+  unsigned short : 0;
+} d;
+// CHECK:*** Dumping AST Record Layout
+// CHECK-NEXT:       0 | union D
+// CHECK-NEXT:     0:- |   unsigned long long
+// CHECK-NEXT:     0:- |   unsigned short
+// CHECK-NEXT:         | [sizeof=1, align=1]
+