diff options
Diffstat (limited to 'absl/flags/flag.h')
| -rw-r--r-- | absl/flags/flag.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/absl/flags/flag.h b/absl/flags/flag.h index b6fbd116ed2f..f18e9f56a5cc 100644 --- a/absl/flags/flag.h +++ b/absl/flags/flag.h @@ -384,11 +384,19 @@ ABSL_NAMESPACE_END // // `default_value` is only used as a double check on the type. `explanation` is // unused. +// +// ABSL_RETIRED_FLAG support omitting the default value for default +// constructible value type, so that users can delete the code generatring this +// value. +// // TODO(rogeeff): Return an anonymous struct instead of bool, and place it into // the unnamed namespace. #define ABSL_RETIRED_FLAG(type, flagname, default_value, explanation) \ - ABSL_ATTRIBUTE_UNUSED static const bool ignored_##flagname = \ - ([] { return type(default_value); }, \ + ABSL_ATTRIBUTE_UNUSED static const bool ignored_##flagname = \ + ([] { \ + return absl::flags_internal::MakeFromDefaultValueOrEmpty<type>( \ + default_value); \ + }, \ absl::flags_internal::RetiredFlag<type>(#flagname)) #endif // ABSL_FLAGS_FLAG_H_ |