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* [gcc r12-7606] libstdc++: Do not use fast_float for 16-bit size_t [PR104870]
@ 2022-03-10 23:45 Jonathan Wakely
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From: Jonathan Wakely @ 2022-03-10 23:45 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:a8db9b90439f33af9ef602325df1f1e967fc549a
commit r12-7606-ga8db9b90439f33af9ef602325df1f1e967fc549a
Author: Jonathan Wakely <jwakely@redhat.com>
Date: Thu Mar 10 21:13:20 2022 +0000
libstdc++: Do not use fast_float for 16-bit size_t [PR104870]
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.
Diff:
---
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
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