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Type checking in SKIP_BACK macro

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Maria Matejka 2021-10-13 11:33:48 +02:00
parent c70b3198dc
commit 2d7e42cc59
1 changed files with 1 additions and 1 deletions
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2
lib/birdlib.h
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@ -16,7 +16,7 @@
struct align_probe { char x; long int y; };
#define OFFSETOF(s, i) ((size_t) &((s *)0)->i)
#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i)))
#define SKIP_BACK(s, i, p) ({ s *_ptr = ((s *)((char *)p - OFFSETOF(s, i))); ASSERT_DIE(&_ptr->i == p); _ptr; })
#define BIRD_ALIGN(s, a) (((s)+a-1)&~(a-1))
#define CPU_STRUCT_ALIGN (sizeof(struct align_probe))