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| author |   Richard Henderson <rth@twiddle.net> | 2017-02-01 14:37:58 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-02-01 14:39:04 -0800 |
| commit | 9c8e64485360d08d95884bddc0958cf3a5ca9c5c (patch) | |
| tree | 1557bd3522093206acd8236e6e2d24bcb322b55d /sysdeps/alpha | |
| parent | Fix missing test dependency (diff) | |
| download | glibc-9c8e64485360d08d95884bddc0958cf3a5ca9c5c.tar.gz glibc-9c8e64485360d08d95884bddc0958cf3a5ca9c5c.tar.bz2 glibc-9c8e64485360d08d95884bddc0958cf3a5ca9c5c.zip | |
alpha: Use saturating arithmetic in memchr
Diffstat (limited to 'sysdeps/alpha')
| -rw-r--r-- | sysdeps/alpha/memchr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sysdeps/alpha/memchr.c b/sysdeps/alpha/memchr.c index 82c42c0731..402088dc9e 100644 --- a/sysdeps/alpha/memchr.c +++ b/sysdeps/alpha/memchr.c @@ -53,7 +53,10 @@ __memchr (const void *s, int xc, size_t n) /* Align the source, and decrement the count by the number of bytes searched in the first word. */ s_align = (const word *)((word)s & -8); - n += ((word)s & 7); + { + size_t inc = n + ((word)s & 7); + n = inc | -(inc < n); + } /* Deal with misalignment in the first word for the comparison. */ mask = (1ul << ((word)s & 7)) - 1; |