lldb/test/Shell/SymbolFile/NativePDB/class_layout.cpp

   1 // clang-format off
   2 // REQUIRES: lld, x86
   3
   4 // Make sure class layout is correct.
   5 // RUN: %clang_cl --target=x86_64-windows-msvc -Od -Z7 -c /Fo%t.obj -- %s
   6 // RUN: lld-link -debug:full -nodefaultlib -entry:main %t.obj -out:%t.exe -pdb:%t.pdb
   7 // RUN: env LLDB_USE_NATIVE_PDB_READER=1 %lldb -f %t.exe -s \
   8 // RUN:     %p/Inputs/class_layout.lldbinit 2>&1 | FileCheck %s
   9
  10 // CHECK:      (lldb) expr a
  11 // CHECK-NEXT: (A) $0 = (d1 = 'a', d2 = 1, d3 = 2, d4 = 'b')
  12 // CHECK-NEXT: (lldb) expr b.c
  13 // CHECK-NEXT: (char) $1 = 'a'
  14 // CHECK-NEXT: (lldb) expr b.u.c
  15 // CHECK-NEXT: (char[2]) $2 = "b"
  16 // CHECK-NEXT: (lldb) expr b.u.i
  17 // CHECK-NEXT: (int) $3 = 98
  18 // CHECK-NEXT: (lldb) expr c
  19 // CHECK-NEXT: (C) $4 = {
  20 // CHECK-NEXT:   c = 'a'
  21 // CHECK-NEXT:   x = 65
  22 // CHECK-NEXT:    = {
  23 // CHECK-NEXT:      = {
  24 // CHECK-NEXT:       c1 = 'b'
  25 // CHECK-NEXT:        = {
  26 // CHECK-NEXT:          = {
  27 // CHECK-NEXT:           s3 = {
  28 // CHECK-NEXT:             x = ([0] = 66, [1] = 67, [2] = 68)
  29 // CHECK-NEXT:           }
  30 // CHECK-NEXT:           c3 = 'c'
  31 // CHECK-NEXT:         }
  32 // CHECK-NEXT:          = {
  33 // CHECK-NEXT:           c4 = 'B'
  34 // CHECK-NEXT:           s4 = {
  35 // CHECK-NEXT:             x = ([0] = 67, [1] = 68, [2] = 99)
  36 // CHECK-NEXT:           }
  37 // CHECK-NEXT:           s1 = {
  38 // CHECK-NEXT:             x = ([0] = 69, [1] = 70, [2] = 71)
  39 // CHECK-NEXT:           }
  40 // CHECK-NEXT:         }
  41 // CHECK-NEXT:       }
  42 // CHECK-NEXT:     }
  43 // CHECK-NEXT:      = {
  44 // CHECK-NEXT:       s2 = {
  45 // CHECK-NEXT:         x = ([0] = 98, [1] = 66, [2] = 67)
  46 // CHECK-NEXT:       }
  47 // CHECK-NEXT:       c2 = 'D'
  48 // CHECK-NEXT:     }
  49 // CHECK-NEXT:   }
  50 // CHECK-NEXT: }
  51 // CHECK-NEXT: (lldb) type lookup C
  52 // CHECK-NEXT: struct C {
  53 // CHECK-NEXT:     char c;
  54 // CHECK-NEXT:     int x;
  55 // CHECK-NEXT:     union {
  56 // CHECK-NEXT:         struct {
  57 // CHECK-NEXT:             char c1;
  58 // CHECK-NEXT:             union {
  59 // CHECK-NEXT:                 struct {
  60 // CHECK-NEXT:                     S3 s3;
  61 // CHECK-NEXT:                     char c3;
  62 // CHECK-NEXT:                 };
  63 // CHECK-NEXT:                 struct {
  64 // CHECK-NEXT:                     char c4;
  65 // CHECK-NEXT:                     S3 s4;
  66 // CHECK-NEXT:                     S3 s1;
  67 // CHECK-NEXT:                 };
  68 // CHECK-NEXT:             };
  69 // CHECK-NEXT:         };
  70 // CHECK-NEXT:         struct {
  71 // CHECK-NEXT:             S3 s2;
  72 // CHECK-NEXT:             char c2;
  73 // CHECK-NEXT:         };
  74 // CHECK-NEXT:     };
  75 // CHECK-NEXT: }
  76
  77
  78
  79 // Test packed stuct layout.
  80 struct __attribute__((packed, aligned(1))) A {
  81   char d1;
  82   int d2;
  83   int d3;
  84   char d4;
  85 };
  86
  87 struct __attribute__((packed, aligned(1))) B {
  88   char c;
  89   union {
  90     char c[2];
  91     int i;
  92   } u;
  93 };
  94
  95 // Test struct layout with anonymous union/struct.
  96 struct S3 {
  97   short x[3];
  98 };
  99
 100 struct C {
 101   char c;
 102   int x;
 103   union {
 104     struct {
 105       char c1;
 106       union {
 107         struct {
 108           S3 s3;
 109           char c3;
 110         };
 111         struct {
 112           char c4;
 113           S3 s4;
 114         };
 115       };
 116       S3 s1;
 117     };
 118     struct {
 119       S3 s2;
 120       char c2;
 121     };
 122   };
 123 };
 124
 125 A a = {'a', 1, 2, 'b'};
 126 B b = {'a', {"b"}};
 127 C c = {.c = 'a', .x = 65, .c1 = 'b', .s3 = {66, 67, 68}, .c3 = 'c', .s1={69, 70, 71}};
 128
 129 int main() {
 130   return 0;
 131 }