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Make FMT_USE_CONSTEVAL optional #4545 #4546

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Merged
vitaut merged 3 commits into from
Sep 24, 2025
+3 −1
Merged

Make FMT_USE_CONSTEVAL optional #4545 #4546

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59040a4
Make FMT_USE_CONSTEVAL optional #4545
SnapperTT Sep 19, 2025
4f24d22
Merge branch 'fmtlib:master' into master
SnapperTT Sep 24, 2025
4f620c6
Requested changes to #ifdef FMT_USE_CONSTEVAL
SnapperTT Sep 24, 2025
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4 changes: 3 additions & 1 deletion include/fmt/base.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,7 +114,9 @@
#endif

// Detect consteval, C++20 constexpr extensions and std::is_constant_evaluated.
#if !defined(__cpp_lib_is_constant_evaluated)
#ifdef FMT_USE_CONSTEVAL
// Use the provided definition.
#elif !defined(__cpp_lib_is_constant_evaluated)
# define FMT_USE_CONSTEVAL 0
#elif FMT_CPLUSPLUS < 201709L
# define FMT_USE_CONSTEVAL 0
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