diff options
Diffstat (limited to 'src/sanity.h')
| -rw-r--r-- | src/sanity.h | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/src/sanity.h b/src/sanity.h index 0b770cf..be77eef 100644 --- a/src/sanity.h +++ b/src/sanity.h @@ -37,9 +37,27 @@ */ #define sanitize_free(...) SANITIZE_CALL(__asan_poison_memory_region, __VA_ARGS__) +/** + * Adjust the size of an allocated region, for things like dynamic arrays. + * + * @ptr + * The memory region. + * @old + * The previous usable size of the region. + * @new + * The new usable size of the region. + * @cap + * The total allocated capacity of the region. + */ +static inline void sanitize_resize(const void *ptr, size_t old, size_t new, size_t cap) { + const char *beg = ptr; + __sanitizer_annotate_contiguous_container(beg, beg + cap, beg + old, beg + new); +} + #else -# define sanitize_alloc sanitize_uninit -# define sanitize_free sanitize_uninit +# define sanitize_alloc(...) ((void)0) +# define sanitize_free(...) ((void)0) +# define sanitize_resize(ptr, old, new, cap) ((void)0) #endif #if __SANITIZE_MEMORY__ @@ -60,16 +78,11 @@ #define sanitize_uninit(...) SANITIZE_CALL(__msan_allocated_memory, __VA_ARGS__) #else -# define sanitize_init(...) SANITIZE_CALL(sanitize_ignore, __VA_ARGS__) -# define sanitize_uninit(...) SANITIZE_CALL(sanitize_ignore, __VA_ARGS__) +# define sanitize_init(...) ((void)0) +# define sanitize_uninit(...) ((void)0) #endif /** - * Squelch unused variable warnings when not sanitizing. - */ -#define sanitize_ignore(ptr, size) ((void)(ptr), (void)(size)) - -/** * Initialize a variable, unless sanitizers would detect uninitialized uses. */ #if __SANITIZE_MEMORY__ |