xref: /minix3/external/bsd/llvm/dist/clang/test/CodeGenCXX/2007-04-05-PackedBitFieldsSmall.cpp (revision f4a2713ac843a11c696ec80c0a5e3e5d80b4d338) 
1*f4a2713aSLionel Sambuc // RUN: %clang_cc1 -emit-llvm %s -o -
2*f4a2713aSLionel Sambuc 
3*f4a2713aSLionel Sambuc 
4*f4a2713aSLionel Sambuc #ifdef PACKED
5*f4a2713aSLionel Sambuc // This is an example where size of Packed struct is smaller then
6*f4a2713aSLionel Sambuc // the size of bit field type.
7*f4a2713aSLionel Sambuc #define P __attribute__((packed))
8*f4a2713aSLionel Sambuc #else
9*f4a2713aSLionel Sambuc #define P
10*f4a2713aSLionel Sambuc #endif
11*f4a2713aSLionel Sambuc 
12*f4a2713aSLionel Sambuc struct P M_Packed {
13*f4a2713aSLionel Sambuc   unsigned long long X:50;
14*f4a2713aSLionel Sambuc   unsigned Y:2;
15*f4a2713aSLionel Sambuc };
16*f4a2713aSLionel Sambuc 
17*f4a2713aSLionel Sambuc struct M_Packed sM_Packed;
18*f4a2713aSLionel Sambuc 
testM_Packed(void)19*f4a2713aSLionel Sambuc int testM_Packed (void) {
20*f4a2713aSLionel Sambuc   struct M_Packed x;
21*f4a2713aSLionel Sambuc   return (0 != x.Y);
22*f4a2713aSLionel Sambuc }
23*f4a2713aSLionel Sambuc 
testM_Packed2(void)24*f4a2713aSLionel Sambuc int testM_Packed2 (void) {
25*f4a2713aSLionel Sambuc   struct M_Packed x;
26*f4a2713aSLionel Sambuc   return (0 != x.X);
27*f4a2713aSLionel Sambuc }
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