clang/test/SemaCXX/pragma-pack.cpp

   1 // RUN: %clang_cc1 -triple i686-apple-darwin9 -fsyntax-only -verify %s
   2 // expected-no-diagnostics
   3
   4 namespace rdar8745206 {
   5
   6 struct Base {
   7   int i;
   8 };
   9
  10 #pragma pack(push, 1)
  11 struct Sub : public Base {
  12   char c;
  13 };
  14 #pragma pack(pop)
  15
  16 int check[sizeof(Sub) == 5 ? 1 : -1];
  17
  18 }
  19
  20 namespace check2 {
  21
  22 struct Base {
  23   virtual ~Base();
  24   int x;
  25 };
  26
  27 #pragma pack(push, 1)
  28 struct Sub : virtual Base {
  29   char c;
  30 };
  31 #pragma pack(pop)
  32
  33 int check[sizeof(Sub) == 13 ? 1 : -1];
  34
  35 }
  36
  37 namespace llvm_support_endian {
  38
  39 template<typename, bool> struct X;
  40
  41 #pragma pack(push)
  42 #pragma pack(1)
  43 template<typename T> struct X<T, true> {
  44   T t;
  45 };
  46 #pragma pack(pop)
  47
  48 #pragma pack(push)
  49 #pragma pack(2)
  50 template<> struct X<long double, true> {
  51   long double c;
  52 };
  53 #pragma pack(pop)
  54
  55 int check1[__alignof(X<int, true>) == 1 ? 1 : -1];
  56 int check2[__alignof(X<long double, true>) == 2 ? 1 : -1];
  57
  58 }