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| author | George Lander <george.lander@arm.com> | 2017-03-10 12:22:45 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-03-10 12:22:45 +0000 |
| commit | 74106ead26b17f3e68b73c6704632cbbbf762a5c (patch) | |
| tree | 136a2a10cf6b54b45778457a25cce75815658367 /gcc/tree-chkp.c | |
| parent | f1b0632aabe6473bf810b5e901d979a4570b7de5 (diff) | |
| download | gcc-74106ead26b17f3e68b73c6704632cbbbf762a5c.zip gcc-74106ead26b17f3e68b73c6704632cbbbf762a5c.tar.gz gcc-74106ead26b17f3e68b73c6704632cbbbf762a5c.tar.bz2 | |
[libstdc++-v3] Fix detection of obsolete isnan
libstdc++-v3 configure checks whether old glibc inline definitions
of isnan would conflict with the libstdc++-v3 definitions and
works around them if so. But if g++ 6.x build A is used to build
another g++ 6.x B, the configure step for B will pick up the math.h
installed alongside A instead of the glibc version. configure will
then assume that the workaround isn't necessary, leaving B with a
broken cmath.
isinf already worked around this. This patch extends the same fix
to isnan. (Thanks to George for the fix.)
libstdc++-v3/
2017-03-10 George Lander <george.lander@arm.com>
* acinclude.m4 (glibcxx_cv_obsolete_isnan): Define
_GLIBCXX_INCLUDE_NEXT_C_HEADERS before including math.h.
* configure: Regenerate.
From-SVN: r246025
Diffstat (limited to 'gcc/tree-chkp.c')
0 files changed, 0 insertions, 0 deletions