lldb/test/Shell/SymbolFile/DWARF/packed.cpp

   1 // XFAIL: target-windows
   2 // RUN: %clangxx_host -gdwarf -o %t %s
   3 // RUN: %lldb %t \
   4 // RUN:   -o "expr alignof(packed)" \
   5 // RUN:   -o "expr sizeof(packed)" \
   6 // RUN:   -o "expr alignof(packed_and_aligned)" \
   7 // RUN:   -o "expr sizeof(packed_and_aligned)" \
   8 // RUN:   -o "expr alignof(derived)" \
   9 // RUN:   -o "expr sizeof(derived)" \
  10 // RUN:   -o exit | FileCheck %s
  11
  12 struct __attribute__((packed)) packed {
  13   int x;
  14   char y;
  15   int z;
  16 } g_packed_struct;
  17 static_assert(alignof(packed) == 1);
  18 static_assert(sizeof(packed) == 9);
  19
  20 // CHECK:      (lldb) expr alignof(packed)
  21 // CHECK-NEXT: ${{.*}} = 1
  22 // CHECK:      (lldb) expr sizeof(packed)
  23 // CHECK-NEXT: ${{.*}} = 9
  24
  25 struct __attribute__((packed, aligned(16))) packed_and_aligned {
  26   int x;
  27   char y;
  28   int z;
  29 } g_packed_and_aligned_struct;
  30 static_assert(alignof(packed_and_aligned) == 16);
  31 static_assert(sizeof(packed_and_aligned) == 16);
  32
  33 // CHECK:      (lldb) expr alignof(packed_and_aligned)
  34 // CHECK-NEXT: ${{.*}} = 16
  35 // CHECK:      (lldb) expr sizeof(packed_and_aligned)
  36 // CHECK-NEXT: ${{.*}} = 16
  37
  38 struct __attribute__((packed)) packed_base { int x; };
  39 static_assert(alignof(packed_base) == 1);
  40
  41 struct derived : packed, packed_base {} g_derived;
  42 static_assert(alignof(derived) == 1);
  43 static_assert(sizeof(derived) == 13);
  44
  45 // CHECK:      (lldb) expr alignof(derived)
  46 // CHECK-NEXT: ${{.*}} = 1
  47 // CHECK:      (lldb) expr sizeof(derived)
  48 // CHECK-NEXT: ${{.*}} = 13
  49
  50 int main() {}