diff options
| -rw-r--r-- | absl/base/attributes.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h index b7826e77..91bf954b 100644 --- a/absl/base/attributes.h +++ b/absl/base/attributes.h @@ -779,4 +779,18 @@ #define ABSL_ATTRIBUTE_TRIVIAL_ABI #endif +// ABSL_ATTRIBUTE_NO_UNIQUE_ADDRESS +// +// Indicates a data member can be optimized to occupy no space (if it is empty) +// and/or its tail padding can be used for other members. +// +// For code that is assured to only build with C++20 or later, prefer using +// the standard attribute `[[no_unique_address]]` directly instead of this +// macro. +#if ABSL_HAVE_CPP_ATTRIBUTE(no_unique_address) +#define ABSL_ATTRIBUTE_NO_UNIQUE_ADDRESS [[no_unique_address]] +#else +#define ABSL_ATTRIBUTE_NO_UNIQUE_ADDRESS +#endif + #endif // ABSL_BASE_ATTRIBUTES_H_ |