clang/test/Sema/pragma-pack-and-options-align.c

   1 // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
   2
   3 // Check that #pragma pack and #pragma options share the same stack.
   4
   5 #pragma pack(push, 1)
   6 struct s0 {
   7   char c;
   8   int x;
   9 };
  10 extern int a[sizeof(struct s0) == 5 ? 1 : -1];
  11
  12 #pragma options align=natural
  13 struct s1 {
  14   char c;
  15   int x;
  16 };
  17 extern int a[sizeof(struct s1) == 8 ? 1 : -1];
  18
  19 #pragma options align=reset
  20 #pragma options align=native
  21 struct s1_1 {
  22   char c;
  23   int x;
  24 };
  25 extern int a[sizeof(struct s1_1) == 8 ? 1 : -1];
  26
  27 #pragma pack(pop)
  28 struct s2 {
  29   char c;
  30   int x;
  31 };
  32 extern int a[sizeof(struct s2) == 5 ? 1 : -1];
  33 #pragma pack(pop)
  34
  35 struct s3 {
  36   char c;
  37   int x;
  38 };
  39 extern int a[sizeof(struct s3) == 8 ? 1 : -1];
  40
  41 #pragma pack(push,2)
  42 #pragma options align=power
  43 struct s4 {
  44   char c;
  45   int x;
  46 };
  47 #pragma pack(pop)
  48 #pragma options align=reset
  49 extern int a[sizeof(struct s4) == 8 ? 1 : -1];
  50
  51 /* expected-warning {{#pragma options align=reset failed: stack empty}} */ #pragma options align=reset
  52 /* expected-warning {{#pragma pack(pop, ...) failed: stack empty}} */ #pragma pack(pop)
  53