Merge 82882b237d0af7c5dfd940b9eeeac2c2c351dc66 into 30868f8734947deeb80cf508c290eae24f3cf261

Merge pull request #392 from biojppm/fix/gcc9_compile_error
Fix compile error with gcc 9: use of [[unlikely]]
2026-06-15 08:26:08 +08:00 · 2026-06-11 19:29:06 +05:30 · 2026-06-11 09:37:38 -04:00 · 2026-06-10 15:37:26 +01:00
1 changed files with 5 additions and 1 deletions
--- a/include/fast_float/float_common.h
+++ b/include/fast_float/float_common.h
@ -207,7 +207,11 @@ using parse_options = parse_options_t<char>;
 // to a no-op elsewhere (e.g. pre-C++20 MSVC, which has no equivalent hint).
 #ifdef __has_cpp_attribute
 #if __has_cpp_attribute(unlikely) >= 201803L
-#define FASTFLOAT_USE_UNLIKELY_ATTR 1
+// g++-9 hits hits this branch, but then fails to compile
+// [[unlikely]]. This happens only with g++-9.
+#if !defined(__GNUC__) || (__GNUC__ != 9)
+#define FASTFLOAT_USE_UNLIKELY_ATTR
+#endif
 #endif
 #endif
Author	SHA1	Message	Date
sahvx655-wq	208a9c4cee	Merge 82882b237d0af7c5dfd940b9eeeac2c2c351dc66 into 30868f8734947deeb80cf508c290eae24f3cf261	2026-06-11 19:29:06 +05:30
Daniel Lemire	30868f8734	Merge pull request #392 from biojppm/fix/gcc9_compile_error Fix compile error with gcc 9: use of [[unlikely]]	2026-06-11 09:37:38 -04:00
Joao Paulo Magalhaes	8e6edc8ad2	Fix compile error with gcc 9: use of [[unlikely]]	2026-06-10 15:37:26 +01:00