clang/test/CodeGenCXX/2007-04-05-PackedBitFieldsSmall.cpp

   1 // RUN: %clang_cc1 -emit-llvm %s -o -
   2
   3
   4 #ifdef PACKED
   5 // This is an example where size of Packed struct is smaller then
   6 // the size of bit field type.
   7 #define P __attribute__((packed))
   8 #else
   9 #define P
  10 #endif
  11
  12 struct P M_Packed {
  13   unsigned long long X:50;
  14   unsigned Y:2;
  15 };
  16
  17 struct M_Packed sM_Packed;
  18
  19 int testM_Packed (void) {
  20   struct M_Packed x;
  21   return (0 != x.Y);
  22 }
  23
  24 int testM_Packed2 (void) {
  25   struct M_Packed x;
  26   return (0 != x.X);
  27 }