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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 analyzer/106573] Missing -Wanalyzer-use-of-uninitialized-value
 on calls handled by state machines
Date: Wed, 29 Mar 2023 18:18:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106573

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by David Malcolm
<dmalcolm@gcc.gnu.org>:

https://gcc.gnu.org/g:62a565e56763c65ec9e134735aa780cf2b1c3cfa

commit r12-9354-g62a565e56763c65ec9e134735aa780cf2b1c3cfa
Author: David Malcolm <dmalcolm@redhat.com>
Date:   Wed Mar 29 14:16:46 2023 -0400

    analyzer: fix missing -Wanalyzer-use-of-uninitialized-value on
special-cased functions [PR106573]

    We were missing checks for uninitialized params on calls to functions
    that the analyzer has hardcoded knowledge of - both for those that are
    handled just by state machines, and for those that are handled in
    region-model-impl-calls.cc (for those arguments for which the svalue
    wasn't accessed in handling the call).

    Fixed thusly.

    Backported from r13-2007-gbddd8d86e3036e, dropping the test case
    fd-uninit-1.c.

    gcc/analyzer/ChangeLog:
            PR analyzer/106573
            * region-model.cc (region_model::on_call_pre): Ensure that we c=
all
            get_arg_svalue on all arguments.

    gcc/testsuite/ChangeLog:
            PR analyzer/106573
            * gcc.dg/analyzer/error-uninit.c: New test.
            * gcc.dg/analyzer/file-uninit-1.c: New test.

    Signed-off-by: David Malcolm <dmalcolm@redhat.com>=