1 // RUN: %clang_cc1 -emit-llvm-only -triple %itanium_abi_triple -fdump-record-layouts %s 2>/dev/null \
2 // RUN: | FileCheck %s
3
4 // On z/OS, a bit-field has single byte alignment. Add aligned(4) on z/OS so the union has
5 // the same size & alignment as expected.
6 #ifdef __MVS__
7 #define ALIGN4 __attribute__((aligned(4)))
8 #else
9 #define ALIGN4
10 #endif
11
12 union A {
13 int f1 : 3 ALIGN4;
14 A();
15 };
16
A()17 A::A() {}
18
19 union B {
20 char f1 : 35 ALIGN4;
21 B();
22 };
23
B()24 B::B() {}
25
26 // CHECK:*** Dumping AST Record Layout
27 // CHECK-NEXT: 0 | union A
28 // CHECK-NEXT: 0:0-2 | int f1
29 // CHECK-NEXT: | [sizeof=4, dsize=1, align=4{{(, preferredalign=4,)?}}
30 // CHECK-NEXT: | nvsize=1, nvalign=4{{(, preferrednvalign=4)?}}]
31
32 // CHECK:*** Dumping AST Record Layout
33 // CHECK-NEXT: 0 | union B
34 // CHECK-NEXT: 0:0-34 | char f1
35 // CHECK-NEXT: | [sizeof=8, dsize=5, align=4{{(, preferredalign=4,)?}}
36 // CHECK-NEXT: | nvsize=5, nvalign=4{{(, preferrednvalign=4)?}}]
37