53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
/* Test for MS bitfield layout */
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/* { dg-do run { target *-*-mingw* *-*-cygwin* i?86-*-* x86_64-*-* } } */
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extern void abort();
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struct s1_t {
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char a;
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char b __attribute__ ((aligned (16)));
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} __attribute__ ((ms_struct));
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struct s1_t s1;
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struct s2_t {
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char a;
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char b;
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} __attribute__ ((ms_struct));
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struct s2_t s2;
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struct s3_t {
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__extension__ char a : 6;
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char b __attribute__ ((aligned (16)));
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} __attribute__ ((ms_struct));
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struct s3_t s3;
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struct s4_t {
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__extension__ char a : 6;
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char b __attribute__ ((aligned (2)));
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} __attribute__ ((ms_struct));
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struct s4_t s4;
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struct s5_t {
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__extension__ char a : 6;
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char b __attribute__ ((aligned (1)));
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} __attribute__ ((ms_struct));
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struct s5_t s5;
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__extension__
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static __PTRDIFF_TYPE__ offs (const void *a, const void *b)
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{
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return (__PTRDIFF_TYPE__) ((const char*)a - (const char*)b);
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}
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int main()
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{
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if (offs (&s1.b, &s1) != 16
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|| offs (&s2.b, &s2) != 1
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|| offs (&s3.b, &s3) != 16
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|| offs (&s4.b, &s4) != 2
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|| offs (&s5.b, &s5) != 1)
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abort ();
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return 0;
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}
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