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From: "malat at debian dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110643] [13/14 Regression] aarch64: Miscompilation at O1
 level (O0 is working)
Date: Wed, 04 Oct 2023 12:33:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110643

--- Comment #17 from Mathieu Malaterre <malat at debian dot org> ---
(In reply to Andrew Pinski from comment #15)
> That returns a address to a local variable ...

Sorry I am having a hard time driving cvise correctly.

Here is the latest version:

g++-13 -g -o works inf6.cc -O0 -Wall -Wextra -Werror -Wfatal-errors
-> no issue

valgrind --error-exitcode=3D1 ./works
-> should only report a memleak

clang++-16 -fsanitize=3Dundefined -g -o works0 inf6.cc -Wall -Wextra -Werror
-Wfatal-errors
-> no issue


You can reproduce the abort using:

g++-13 -g -o fails inf6.cc -O1 -Wall -Wextra -Werror -Wfatal-errors
-> abort

Please note that my version of g++-11 & g++-12 compile the TU just fine usi=
ng
-O1.

Could you please run a regression to identify which commit along GCC-13 bra=
nch
introduce the change at least to get the ball rolling ?

Thanks !=