diff options
Diffstat (limited to 'absl/base/attributes.h')
| -rw-r--r-- | absl/base/attributes.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/absl/base/attributes.h b/absl/base/attributes.h index cf2cb550..4a8581e1 100644 --- a/absl/base/attributes.h +++ b/absl/base/attributes.h @@ -524,6 +524,13 @@ // ABSL_ATTRIBUTE_UNUSED // // Prevents the compiler from complaining about variables that appear unused. +// +// For code or headers that are assured to only build with C++17 and up, prefer +// just using the standard '[[maybe_unused]]' directly over this macro. +// +// Due to differences in positioning requirements between the old, compiler +// specific __attribute__ syntax and the now standard [[maybe_unused]], this +// macro does not attempt to take advantage of '[[maybe_unused]]'. #if ABSL_HAVE_ATTRIBUTE(unused) || (defined(__GNUC__) && !defined(__clang__)) #undef ABSL_ATTRIBUTE_UNUSED #define ABSL_ATTRIBUTE_UNUSED __attribute__((__unused__)) |