[Bug 269688] memalign() produces division by zero if alignment is 0

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Mar 2023 00:24:10 UTC

--- Comment #7 from commit-hook@FreeBSD.org ---
A commit in branch stable/13 references this bug:


commit 1b1d2aea020e88b3d2076207b13fec3adde42aa9
Author:     Paul Floyd <pjfloyd@wanadoo.fr>
AuthorDate: 2023-02-24 16:29:01 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2023-03-03 00:23:24 +0000

    libc: handle zero alignment in memalign()

    For compatibility with glibc. The previous code would trigger a division
    by zero in roundup() and terminate.  Instead, just pass through to
    malloc() for align == 0.

    PR:             269688
    Reviewed by:    imp, mjg
    MFC after:      1 week
    Pull Request:   https://github.com/freebsd/freebsd-src/pull/655

    (cherry picked from commit 2c709ee70ade9fd8f77b37917a4169d667dda41d)

 lib/libc/gen/memalign.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

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