diff options
Diffstat (limited to 'absl/base/macros.h')
| -rw-r--r-- | absl/base/macros.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/absl/base/macros.h b/absl/base/macros.h index 547f93ba..2f6089f4 100644 --- a/absl/base/macros.h +++ b/absl/base/macros.h @@ -32,6 +32,7 @@ #include <cstddef> #include "absl/base/attributes.h" +#include "absl/base/config.h" #include "absl/base/optimization.h" #include "absl/base/port.h" @@ -207,6 +208,40 @@ ABSL_NAMESPACE_END : [] { assert(false && #expr); }()) // NOLINT #endif +// `ABSL_INTERNAL_HARDENING_ABORT()` controls how `ABSL_HARDENING_ASSERT()` +// aborts the program in release mode (when NDEBUG is defined). The +// implementation should abort the program as quickly as possible and ideally it +// should not be possible to ignore the abort request. +#if ABSL_HAVE_BUILTIN(__builtin_trap) || \ + (defined(__GNUC__) && !defined(__clang__)) +#define ABSL_INTERNAL_HARDENING_ABORT() \ + do { \ + __builtin_trap(); \ + __builtin_unreachable(); \ + } while (false) +#else +#define ABSL_INTERNAL_HARDENING_ABORT() abort() +#endif + +// ABSL_HARDENING_ASSERT() +// +// `ABSL_HARDENED_ASSERT()` is like `ABSL_ASSERT()`, but used to implement +// runtime assertions that should be enabled in hardened builds even when +// `NDEBUG` is defined. +// +// When `NDEBUG` is not defined, `ABSL_HARDENED_ASSERT()` is identical to +// `ABSL_ASSERT()`. +// +// See `ABSL_OPTION_HARDENED` in `absl/base/options.h` for more information on +// hardened mode. +#if ABSL_OPTION_HARDENED == 1 && defined(NDEBUG) +#define ABSL_HARDENING_ASSERT(expr) \ + (ABSL_PREDICT_TRUE((expr)) ? static_cast<void>(0) \ + : [] { ABSL_INTERNAL_HARDENING_ABORT(); }()) +#else +#define ABSL_HARDENING_ASSERT(expr) ABSL_ASSERT(expr) +#endif + #ifdef ABSL_HAVE_EXCEPTIONS #define ABSL_INTERNAL_TRY try #define ABSL_INTERNAL_CATCH_ANY catch (...) |