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

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