Fix chrono locale format bug for RHEL gcc

Fix fmtlib#3858 Signed-off-by: Gao Mingfei <gaomingfei@mdsl-invest.com>
g199209 · Feb 20, 2024 · 964f9a1 · 964f9a1
1 parent 0166f45
commit 964f9a1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/include/fmt/chrono.h b/include/fmt/chrono.h
@@ -399,7 +399,8 @@ auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc)
     // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and
     // gcc-4.
 #if FMT_MSC_VERSION != 0 || \
-    (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI))
+    (defined(__GLIBCXX__) && \
+     (!defined(_GLIBCXX_USE_DUAL_ABI) || _GLIBCXX_USE_DUAL_ABI == 0))
     // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5
     // and newer.
     using code_unit = wchar_t;