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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/107678] [13 Regression] Segfault in
 aarch64_fallback_frame_state when running SVE code
Date: Thu, 01 Dec 2022 14:46:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107678

Wilco <wilco at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |wilco at gcc dot gnu.org

--- Comment #5 from Wilco <wilco at gcc dot gnu.org> ---
It's not related to SVE unwinding since adding +nosve still fails. The crash
happens after reading the correct return address from the stack. However the
top bits of this value get corrupted, resulting in an illegal access in
aarch64_fallback_frame_state (it seems doing an unconditional read is a bad
idea since at this point the RA may be corrupted).=