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Diffstat (limited to 'src/fundamental')
| -rw-r--r-- | src/fundamental/macro-fundamental.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/fundamental/macro-fundamental.h b/src/fundamental/macro-fundamental.h index 65c9e042cd..db778c7609 100644 --- a/src/fundamental/macro-fundamental.h +++ b/src/fundamental/macro-fundamental.h @@ -354,6 +354,16 @@ static inline size_t ALIGN_TO(size_t l, size_t ali) { ((l) + (ali) - 1) & ~((ali) - 1), \ VOID_0) +/* Similar to ((t *) (void *) (p)) to cast a pointer. The macro asserts that the pointer has a suitable + * alignment for type "t". This exists for places where otherwise "-Wcast-align=strict" would issue a + * warning or if you want to assert that the cast gives a pointer of suitable alignment. */ +#define CAST_ALIGN_PTR(t, p) \ + ({ \ + const void *_p = (p); \ + assert(((uintptr_t) _p) % __alignof__(t) == 0); \ + (t *) _p; \ + }) + #define UPDATE_FLAG(orig, flag, b) \ ((b) ? ((orig) | (flag)) : ((orig) & ~(flag))) #define SET_FLAG(v, flag, b) \ |