diff options
Diffstat (limited to 'absl/base')
| -rw-r--r-- | absl/base/attributes.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h index f180cd77..00aad489 100644 --- a/absl/base/attributes.h +++ b/absl/base/attributes.h @@ -401,6 +401,9 @@ // // Tells the compiler to warn about unused results. // +// For code or headers that are assured to only build with C++17 and up, prefer +// just using the standard `[[nodiscard]]` directly over this macro. +// // When annotating a function, it must appear as the first part of the // declaration or definition. The compiler will warn if the return value from // such a function is unused: @@ -427,9 +430,10 @@ // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425 // // Note: past advice was to place the macro after the argument list. -#if ABSL_HAVE_ATTRIBUTE(nodiscard) -#define ABSL_MUST_USE_RESULT [[nodiscard]] -#elif defined(__clang__) && ABSL_HAVE_ATTRIBUTE(warn_unused_result) +// +// TODO(b/176172494): Use ABSL_HAVE_CPP_ATTRIBUTE(nodiscard) when all code is +// compliant with the stricter [[nodiscard]]. +#if defined(__clang__) && ABSL_HAVE_ATTRIBUTE(warn_unused_result) #define ABSL_MUST_USE_RESULT __attribute__((warn_unused_result)) #else #define ABSL_MUST_USE_RESULT |