diff options
| author |  Mike Hommey <mhommey@mozilla.com> | 2023-05-17 13:35:35 +0900 |
|---|---|---|
| committer |  Mike Hommey <mh@glandium.org> | 2023-05-18 05:45:34 +0900 |
| commit | 486db28adc2c48c255fffbfde1d59415f4762b71 (patch) | |
| tree | 6aa3d5cc71eb096a333c315ff34215fb42bfa67b | |
| parent | c8b33b0191a2db8364cacf94b267ea8a3f20ad83 (diff) | |
Use UB impl of launder on when using clang < 8 and c++17
libstdc++'s definition of std::launder places it behind a check for
__builtin_launder, which is not available before clang 8.
Fixes: #1309
| -rw-r--r-- | absl/functional/internal/any_invocable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/absl/functional/internal/any_invocable.h b/absl/functional/internal/any_invocable.h index d41b7e56..634984ca 100644 --- a/absl/functional/internal/any_invocable.h +++ b/absl/functional/internal/any_invocable.h @@ -197,7 +197,7 @@ union TypeErasedState { template <class T> T& ObjectInLocalStorage(TypeErasedState* const state) { // We launder here because the storage may be reused with the same type. -#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L +#if ABSL_INTERNAL_CPLUSPLUS_LANG >= 201703L && __cpp_lib_launder >= 201606L return *std::launder(reinterpret_cast<T*>(&state->storage)); #elif ABSL_HAVE_BUILTIN(__builtin_launder) return *__builtin_launder(reinterpret_cast<T*>(&state->storage)); |