diff options
| author | Jonathan Wakely <jwakely@redhat.com> | 2018-05-08 13:05:04 +0000 |
|---|---|---|
| committer | Jonathan Wakely <jwakely@redhat.com> | 2018-05-08 13:05:04 +0000 |
| commit | 6498c92597ddaf07729ebf14f718453531089daa (patch) | |
| tree | 7b0c280cb05498d6ea41e292526e3a0549cfed2a /libstdc++-v3/include/bits/c++config | |
| parent | aa268850374ae454e7bdf28b08ed41b276baa403 (diff) | |
PR libstdc++/85672 #undef _GLIBCXX_USE_FLOAT128 when not supported
Restore the behaviour in GCC 8 and earlier where _GLIBCXX_USE_FLOAT128
is not defined when configure detects support is missing. This avoids
having three states where the macro is either 1, 0, or undefined.
PR libstdc++/85672
* include/Makefile.am [!ENABLE_FLOAT128]: Change c++config.h entry
to #undef _GLIBCXX_USE_FLOAT128 instead of defining it to zero.
* include/Makefile.in: Regenerate.
* include/bits/c++config (_GLIBCXX_USE_FLOAT128): Move definition
within conditional block.
git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@260043 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/include/bits/c++config')
| -rw-r--r-- | libstdc++-v3/include/bits/c++config | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/libstdc++-v3/include/bits/c++config b/libstdc++-v3/include/bits/c++config index e34524117d6..bfe268da825 100644 --- a/libstdc++-v3/include/bits/c++config +++ b/libstdc++-v3/include/bits/c++config @@ -610,9 +610,8 @@ namespace std #endif /* Define if __float128 is supported on this host. */ +#if defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__) #define _GLIBCXX_USE_FLOAT128 -#if !defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__) -#undef _GLIBCXX_USE_FLOAT128 #endif // End of prewritten config; the settings discovered at configure time follow. |