libc: Use musl's optimized memchr
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Authored by emaste on Oct 20 2018, 10:29 PM.

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jhb
mjg
kib

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rS351700: libc: Use musl's optimized memchr

Summary

Parentheses added to HASZERO macro to avoid a GCC warning.

Obtained from: musl (snapshot at commit c648cefb)
Sponsored by: The FreeBSD Foundation

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emaste created this revision.Oct 20 2018, 10:29 PM

kib accepted this revision.Oct 21 2018, 12:08 AM

This revision is now accepted and ready to land.Oct 21 2018, 12:08 AM

mjg accepted this revision.Nov 6 2018, 1:18 PM

Update with musl 4d0a82170a25464c39522d7190b9fe302045ddb2:

fix aliasing-based undefined behavior in string functions

use the GNU C may_alias attribute if available, and fallback to naive
byte-by-byte loops if __GNUC__ is not defined.

this patch has been written to minimize changes so that history
remains reviewable; it does not attempt to bring the affected code
into a more consistent or elegant form.

FreeBSD is presumably built only with GCC or Clang (which also defines __GNUC__) so this should have no effect but is preferable.

This revision now requires review to proceed.Nov 12 2018, 2:11 PM

This might have gotten newer updates, but otherwise fine with me.

This revision is now accepted and ready to land.Sep 2 2019, 1:34 PM

Closed by commit rS351700: libc: Use musl's optimized memchr (authored by emaste). · Explain WhySep 2 2019, 1:56 PM

This revision was automatically updated to reflect the committed changes.

emaste added a commit: rS351700: libc: Use musl's optimized memchr.

Herald added a subscriber: imp. · View Herald TranscriptSep 2 2019, 1:56 PM