* [committed] libstdc++: Do not use fast_float for 16-bit size_t [PR104870]
@ 2022-03-10 23:45 Jonathan Wakely
0 siblings, 0 replies; only message in thread
From: Jonathan Wakely @ 2022-03-10 23:45 UTC (permalink / raw)
To: libstdc++, gcc-patches
Tested x86_64-linux and built on msp430-elf, pushed to trunk.
-- >8 --
The preprocessor condition for using fast_float should match the one in
the header, and require at least 32-bit size_t.
libstdc++-v3/ChangeLog:
PR libstdc++/104870
* src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
before using fast_float.
---
libstdc++-v3/src/c++17/floating_from_chars.cc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/src/c++17/floating_from_chars.cc b/libstdc++-v3/src/c++17/floating_from_chars.cc
index ba1345db3f2..ba0426b3344 100644
--- a/libstdc++-v3/src/c++17/floating_from_chars.cc
+++ b/libstdc++-v3/src/c++17/floating_from_chars.cc
@@ -61,7 +61,8 @@
extern "C" __ieee128 __strtoieee128(const char*, char**);
#endif
-#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64
+#if _GLIBCXX_FLOAT_IS_IEEE_BINARY32 && _GLIBCXX_DOUBLE_IS_IEEE_BINARY64 \
+ && __SIZE_WIDTH__ >= 32
# define USE_LIB_FAST_FLOAT 1
# if __LDBL_MANT_DIG__ == __DBL_MANT_DIG__
# undef USE_STRTOD_FOR_FROM_CHARS
--
2.34.1
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2022-03-10 23:45 [committed] libstdc++: Do not use fast_float for 16-bit size_t [PR104870] Jonathan Wakely
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