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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/107734] New: valgrind error for
 gcc/testsuite/cc.target/i386/pr46051.c
Date: Thu, 17 Nov 2022 11:45:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107734

            Bug ID: 107734
           Summary: valgrind error for
                    gcc/testsuite/cc.target/i386/pr46051.c
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

I just built a valgrind version of today's gcc trunk.=20

When compiling source code file gcc.target/i386/pr46051.c,
I got the following:

$ ~/gcc/results.20221117.valgrind/bin/gcc -c -O2 ./gcc.target/i386/pr46051.c
=3D=3D639651=3D=3D Conditional jump or move depends on uninitialised value(=
s)
=3D=3D639651=3D=3D    at 0x11DFAE7: bitmap_set_bit (sbitmap.h:137)
=3D=3D639651=3D=3D    by 0x11DFAE7: gimple_simplify_122(gimple_match_op*, g=
imple**,
tree
_node* (*)(tree_node*), tree_node*, tree_node**, tree_code)
(gimple-match.cc:489
33)
=3D=3D639651=3D=3D    by 0x1154189: gimple_simplify_MULT_EXPR(gimple_match_=
op*,
gimple**
, tree_node* (*)(tree_node*), code_helper, tree_node*, tree_node*, tree_nod=
e*)
(
gimple-match.cc:131594)
=3D=3D639651=3D=3D    by 0x10771D1: gimple_resimplify2(gimple**, gimple_mat=
ch_op*,
tree_
node* (*)(tree_node*)) (gimple-match-head.cc:323)=