clang/test/Layout/ms-x86-empty-layout.c

   1 // RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple i686-pc-win32 -fms-extensions -fdump-record-layouts -fsyntax-only %s 2>/dev/null \
   2 // RUN:            | FileCheck %s
   3 // RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple x86_64-pc-win32 -fms-extensions -fdump-record-layouts -fsyntax-only %s 2>/dev/null \
   4 // RUN:            | FileCheck %s
   5
   6 struct EmptyIntMemb {
   7   int FlexArrayMemb[0];
   8 };
   9 // CHECK:       *** Dumping AST Record Layout
  10 // CHECK-NEXT:  0 | struct EmptyIntMemb
  11 // CHECK-NEXT:  0 | int[0] FlexArrayMemb
  12 // CHECK-NEXT:    | [sizeof=4, align=4
  13
  14 struct EmptyLongLongMemb {
  15   long long FlexArrayMemb[0];
  16 };
  17 // CHECK: *** Dumping AST Record Layout
  18 // CHECK-NEXT:  0 | struct EmptyLongLongMemb
  19 // CHECK-NEXT:  0 | long long[0] FlexArrayMemb
  20 // CHECK-NEXT:    | [sizeof=4, align=8
  21
  22 struct EmptyAligned2LongLongMemb {
  23   long long __declspec(align(2)) FlexArrayMemb[0];
  24 };
  25
  26 // CHECK: *** Dumping AST Record Layout
  27 // CHECK-NEXT:  0 | struct EmptyAligned2LongLongMemb
  28 // CHECK-NEXT:  0 | long long[0] FlexArrayMemb
  29 // CHECK-NEXT:    | [sizeof=4, align=8
  30
  31 struct EmptyAligned8LongLongMemb {
  32   long long __declspec(align(8)) FlexArrayMemb[0];
  33 };
  34
  35 // CHECK: *** Dumping AST Record Layout
  36 // CHECK-NEXT:  0 | struct EmptyAligned8LongLongMemb
  37 // CHECK-NEXT:  0 | long long[0] FlexArrayMemb
  38 // CHECK-NEXT:    | [sizeof=8, align=8
  39
  40 #pragma pack(1)
  41 struct __declspec(align(4)) EmptyPackedAligned4LongLongMemb {
  42   long long FlexArrayMemb[0];
  43 };
  44 #pragma pack()
  45
  46 // CHECK: *** Dumping AST Record Layout
  47 // CHECK-NEXT:  0 | struct EmptyPackedAligned4LongLongMemb
  48 // CHECK-NEXT:  0 | long long[0] FlexArrayMemb
  49 // CHECK-NEXT:    | [sizeof=4, align=4
  50
  51 #pragma pack(1)
  52 struct EmptyPackedAligned8LongLongMemb {
  53   long long __declspec(align(8)) FlexArrayMemb[0];
  54 };
  55 #pragma pack()
  56
  57 // CHECK: *** Dumping AST Record Layout
  58 // CHECK-NEXT:  0 | struct EmptyPackedAligned8LongLongMemb
  59 // CHECK-NEXT:  0 | long long[0] FlexArrayMemb
  60 // CHECK-NEXT:    | [sizeof=8, align=8
  61
  62
  63 int a[
  64 sizeof(struct EmptyIntMemb)+
  65 sizeof(struct EmptyLongLongMemb)+
  66 sizeof(struct EmptyAligned2LongLongMemb)+
  67 sizeof(struct EmptyAligned8LongLongMemb)+
  68 sizeof(struct EmptyPackedAligned4LongLongMemb)+
  69 sizeof(struct EmptyPackedAligned8LongLongMemb)+
  70 0];