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[Bug string/21018] Add memcchr function


https://sourceware.org/bugzilla/show_bug.cgi?id=21018

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |adhemerval.zanella at linaro dot o
                   |                            |rg

--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
I am still skeptical how common this specific function is based solely on
stackoverflow reports.  FreeBSD usage itself seems not really widespread and
only occurs in basically two places [1] (it does not invalidate the possible
usefulness of the symbol, but show that it usage might be somewhat limited).

Also, it does not seems to be reimplemented in many places (not at least with
same name) on other projects [2].

If you want to pursuit the possible inclusion on glibc, I would recommend start
a discussion on libc-alpha maillist.

[1] https://github.com/freebsd/freebsd/search?utf8=%E2%9C%93&q=memcchr
[2] https://codesearch.debian.net/search?q=memcchr

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