clang/test/CodeGenCXX/override-layout-nameless-struct-union.cpp

   1 // RUN: %clang_cc1 -w -fdump-record-layouts-simple -foverride-record-layout=%S/Inputs/override-layout-nameless-struct-union.layout %s | FileCheck %s
   2
   3 // CHECK: Type: struct S
   4 // CHECK:   Size:64
   5 // CHECK:   Alignment:32
   6 // CHECK:   FieldOffsets: [0, 32, 32]
   7 struct S {
   8   short _s;
   9 //union {
  10     int _su0;
  11     char _su1;
  12 //};
  13 };
  14
  15 // CHECK: Type: union U
  16 // CHECK:   Size:96
  17 // CHECK:   Alignment:32
  18 // CHECK:   FieldOffsets: [0, 0, 32, 64, 68, 73]
  19 union U {
  20   short _u;
  21 //struct {
  22     char _us0;
  23     int _us1;
  24     unsigned _us20 : 4;
  25     unsigned _us21 : 5;
  26     unsigned _us22 : 6;
  27 //};
  28 };
  29
  30 void use_structs() {
  31   S ss[sizeof(S)];
  32   U us[sizeof(U)];
  33 }