external/bsd/llvm/dist/clang/test/Layout/ms-x86-empty-layout.c

   1 // RUN: %clang_cc1 -fno-rtti -emit-llvm-only -triple i686-pc-win32 -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 -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: Type: struct EmptyIntMemb
  11 // CHECK: Record:
  12 // CHECK: Layout: <ASTRecordLayout
  13 // CHECK:     Size:32
  14 // CHECK:     Alignment:32
  15 // CHECK:     FieldOffsets: [0]>
  16
  17 struct EmptyLongLongMemb {
  18   long long FlexArrayMemb[0];
  19 };
  20 // CHECK: *** Dumping AST Record Layout
  21 // CHECK: Type: struct EmptyLongLongMemb
  22 // CHECK: Record:
  23 // CHECK: Layout: <ASTRecordLayout
  24 // CHECK:     Size:32
  25 // CHECK:     Alignment:64
  26 // CHECK:     FieldOffsets: [0]>
  27
  28 struct EmptyAligned2LongLongMemb {
  29   long long __declspec(align(2)) FlexArrayMemb[0];
  30 };
  31
  32 // CHECK: *** Dumping AST Record Layout
  33 // CHECK: Type: struct EmptyAligned2LongLongMemb
  34 // CHECK: Record:
  35 // CHECK: Layout: <ASTRecordLayout
  36 // CHECK:     Size:32
  37 // CHECK:     Alignment:64
  38 // CHECK:     FieldOffsets: [0]>
  39
  40 struct EmptyAligned8LongLongMemb {
  41   long long __declspec(align(8)) FlexArrayMemb[0];
  42 };
  43
  44 // CHECK: *** Dumping AST Record Layout
  45 // CHECK: Type: struct EmptyAligned8LongLongMemb
  46 // CHECK: Record:
  47 // CHECK: Layout: <ASTRecordLayout
  48 // CHECK:     Size:64
  49 // CHECK:     Alignment:64
  50 // CHECK:     FieldOffsets: [0]>
  51
  52 #pragma pack(1)
  53 struct __declspec(align(4)) EmptyPackedAligned4LongLongMemb {
  54   long long FlexArrayMemb[0];
  55 };
  56 #pragma pack()
  57
  58 // CHECK: *** Dumping AST Record Layout
  59 // CHECK: Type: struct EmptyPackedAligned4LongLongMemb
  60 // CHECK: Record:
  61 // CHECK: Layout: <ASTRecordLayout
  62 // CHECK:     Size:32
  63 // CHECK:     Alignment:32
  64 // CHECK:     FieldOffsets: [0]>
  65
  66 #pragma pack(1)
  67 struct EmptyPackedAligned8LongLongMemb {
  68   long long __declspec(align(8)) FlexArrayMemb[0];
  69 };
  70 #pragma pack()
  71
  72 // CHECK: *** Dumping AST Record Layout
  73 // CHECK: Type: struct EmptyPackedAligned8LongLongMemb
  74 // CHECK: Record:
  75 // CHECK: Layout: <ASTRecordLayout
  76 // CHECK:     Size:64
  77 // CHECK:     Alignment:64
  78 // CHECK:     FieldOffsets: [0]>
  79
  80
  81 int a[
  82 sizeof(struct EmptyIntMemb)+
  83 sizeof(struct EmptyLongLongMemb)+
  84 sizeof(struct EmptyAligned2LongLongMemb)+
  85 sizeof(struct EmptyAligned8LongLongMemb)+
  86 sizeof(struct EmptyPackedAligned4LongLongMemb)+
  87 sizeof(struct EmptyPackedAligned8LongLongMemb)+
  88 0];