diff options
Diffstat (limited to 'absl/base')
| -rw-r--r-- | absl/base/macros.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/absl/base/macros.h b/absl/base/macros.h index f33cd192..cd7cf498 100644 --- a/absl/base/macros.h +++ b/absl/base/macros.h @@ -138,4 +138,16 @@ ABSL_NAMESPACE_END #define ABSL_INTERNAL_RETHROW do {} while (false) #endif // ABSL_HAVE_EXCEPTIONS +// Requires the compiler to prove that the size of the given object is at least +// the expected amount. +#if ABSL_HAVE_ATTRIBUTE(diagnose_if) && ABSL_HAVE_BUILTIN(__builtin_object_size) +#define ABSL_INTERNAL_NEED_MIN_SIZE(Obj, N) \ + __attribute__((diagnose_if(__builtin_object_size(Obj, 0) < N, \ + "object size provably too small " \ + "(this would corrupt memory)", \ + "error"))) +#else +#define ABSL_INTERNAL_NEED_MIN_SIZE(Obj, N) +#endif + #endif // ABSL_BASE_MACROS_H_ |