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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/102285] New flag -ftrivial-auto-var-init=zero causes
 many crashes in the testsuite
Date: Sun, 12 Sep 2021 08:06:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102285

--- Comment #6 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to qinzhao from comment #5)
> with the latest GCC, for all the 42647 c files under gcc/testsuite, with =
-c
> -g -O2 -Wall -ftrivial-auto-var-init=3Dzero, there is only one failure:
>  /home/opc/Install/latest/bin/gcc -c -g -ftrivial-auto-var-init=3Dzero -O2
> -Wall ./gcc.dg/graphite/pr82421.c

> delete -ftrivial-auto-var-init=3Dzero, the failure is gone.
>=20
> I will study this one to fix it.

Good news. I'll test with -O3 -march=3Dnative, and if it passes then the C =
side=20
of things looks good enough for prime time.

I will then test C++ and Fortran in a similar way, and if they pass too,
then the new flag looks IMHO ready for other compiler users.=