aboutsummaryrefslogtreecommitdiff
path: root/ChangeLog
diff options
context:
space:
mode:
authorJoseph Myers <joseph@codesourcery.com>2017-01-12 01:52:37 +0000
committerJoseph Myers <joseph@codesourcery.com>2017-01-12 01:52:37 +0000
commit4dfb9c941132d7b10b897c678f360fd27d6f5c95 (patch)
treed23f1574d0c125532196465cbe291679c20e976b /ChangeLog
parent6a1cefac196f45d766027c97a6c8c44459c9cccd (diff)
downloadglibc-4dfb9c941132d7b10b897c678f360fd27d6f5c95.zip
glibc-4dfb9c941132d7b10b897c678f360fd27d6f5c95.tar.gz
glibc-4dfb9c941132d7b10b897c678f360fd27d6f5c95.tar.bz2
Make fallback fegetexceptflag work with generic fetestexceptflag.
The generic implementation of fetestexceptflag does: int fetestexceptflag (const fexcept_t *flagp, int excepts) { /* Most versions of fegetexceptflag store exceptions in a form such that this works. */ return *flagp & excepts & FE_ALL_EXCEPT; } In the case where FE_ALL_EXCEPT is nonzero but exceptions may not be supported at runtime, this only works if fegetexceptflag cleared all the bits of FE_ALL_EXCEPT in *flagp; otherwise it accesses uninitialized data. This showed up as a failure of math/test-fetestexceptflag for MIPS o32 soft-float. This patch makes the fallback fegetexceptflag store 0 (fexcept_t is an integer type everywhere) so that this works. (No bug report in Bugzilla because this wasn't user-visible - at least, without using tools to detect uninitialized memory use at runtime - without fetestexceptflag, which is new in 2.25.) Tested for MIPS o32 soft-float. * math/fgetexcptflg.c (__fegetexceptflag): Store 0 in fexcept_t object.
Diffstat (limited to 'ChangeLog')
-rw-r--r--ChangeLog5
1 files changed, 5 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog
index d86a9c7..5b0601f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2017-01-12 Joseph Myers <joseph@codesourcery.com>
+
+ * math/fgetexcptflg.c (__fegetexceptflag): Store 0 in fexcept_t
+ object.
+
2017-01-11 Joseph Myers <joseph@codesourcery.com>
[BZ #16458]