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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/109970] -Wstringop-overflow should work with parameter
 forward declarations
Date: Fri, 26 May 2023 21:31:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109970

--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Uecker <uecker@gcc.gnu.org>:

https://gcc.gnu.org/g:8d6bd830f5f9c939e8565c0341a0c6c588834484

commit r14-1304-g8d6bd830f5f9c939e8565c0341a0c6c588834484
Author: Martin Uecker <uecker@tugraz.at>
Date:   Fri May 26 11:19:01 2023 +0200

    c: -Wstringop-overflow for parameters with forward-declared sizes

    Warnings from -Wstringop-overflow do not appear for parameters declared
    as VLAs when the bound refers to a parameter forward declaration. This
    is fixed by splitting the loop that passes through parameters into two,
    first only recording the positions of all possible size expressions
    and then processing the parameters.

    PR c/109970

    gcc/c-family:

            * c-attribs.cc (build_attr_access_from_parms): Split loop to fi=
rst
            record all parameters.

    gcc/testsuite:

            * gcc.dg/pr109970.c: New test.=