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| author | Jonathan Wakely <jwakely@redhat.com> | 2024-08-28 12:09:58 +0100 |
|---|---|---|
| committer | Jonathan Wakely <redi@gcc.gnu.org> | 2024-08-28 21:34:22 +0100 |
| commit | 0e2b3dba5179c9becbff0730febbdce3a088bae3 (patch) | |
| tree | 44f54f89886059fb1faea531b6c2f34b430a2061 | |
| parent | a59f1cc31cf6c7ed30a78cef134ea3ed5e139414 (diff) | |
| download | gcc-0e2b3dba5179c9becbff0730febbdce3a088bae3.zip gcc-0e2b3dba5179c9becbff0730febbdce3a088bae3.tar.gz gcc-0e2b3dba5179c9becbff0730febbdce3a088bae3.tar.bz2 | |
libstdc++: Fix -Wunused-variable warning in <format>
libstdc++-v3/ChangeLog:
* include/std/format (format_parse_context::check_dynamic_spec):
Add [[maybe_unused]] attribute and comment.
| -rw-r--r-- | libstdc++-v3/include/std/format | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libstdc++-v3/include/std/format b/libstdc++-v3/include/std/format index 3280dad..52243eb 100644 --- a/libstdc++-v3/include/std/format +++ b/libstdc++-v3/include/std/format @@ -4323,6 +4323,11 @@ namespace __format constexpr void basic_format_parse_context<_CharT>::check_dynamic_spec(size_t __id) noexcept { + // This call enforces the Mandates: condition that _Ts contains valid + // types and each type appears at most once. It could be a static_assert + // but this way failures give better diagnostics, due to calling the + // non-constexpr __invalid_dynamic_spec function. + [[maybe_unused]] constexpr bool __ok = __check_dynamic_spec_types<_Ts...>(); if consteval { |