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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/103050] [12 Regression] 520.omnetpp_r
 miscompiled after r12-4787-gb8ef019ab938471f
Date: Tue, 02 Nov 2021 18:41:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103050

--- Comment #4 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to Martin Li=C5=A1ka from comment #3)
> First valgrind error happens here:
>=20
> Loading NED files from a SPEC directory 13
> =3D=3D22550=3D=3D Conditional jump or move depends on uninitialised value=
(s)
> =3D=3D22550=3D=3D    at 0x53DF91: Cmdenv::sputn(char const*, int) (cmdenv=
.cc:572)
> =3D=3D22550=3D=3D    by 0x44EEF5: UnknownInlinedFun (cenvir.cc:39)
> =3D=3D22550=3D=3D    by 0x44EEF5: UnknownInlinedFun (cenvir.cc:47)
> =3D=3D22550=3D=3D    by 0x44EEF5: UnknownInlinedFun (streambuf:456)
> =3D=3D22550=3D=3D    by 0x44EEF5: cEnvir::printf(char const*, ...) (cenvi=
r.cc:108)
> =3D=3D22550=3D=3D    by 0x49C4F7: EnvirBase::setup() (envirbase.cc:397)
> =3D=3D22550=3D=3D    by 0x49CAEE: EnvirBase::run(int, char**, cConfigurat=
ion*)
> (envirbase.cc:229)
> =3D=3D22550=3D=3D    by 0x54F88C: setupUserInterface(int, char**, cConfig=
uration*)
> [clone .constprop.0] (startup.cc:234)
> =3D=3D22550=3D=3D    by 0x43394C: main (main.cc:39)
> =3D=3D22550=3D=3D

Sorry, this happens also with -O0. Searching more..=