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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/109491] [13 Regression] Segfault in
 tree-ssa-sccvn.cc:expressions_equal_p()
Date: Thu, 13 Apr 2023 11:34:49 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109491

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Doesn't happen with a cross from x86_64 to powerpc64-suse-linux.  I've just
used

./configure --target=3Dpowerpc64-suse-linux --enable-languages=3Dc,c++,lto

and

./cc1plus -quiet -I include t.ii -mcpu=3Dpower8 -std=3Dc++14 -O2

and yes, it's very slow.

I wonder if at the point of the crash e1 or e2 are NULL or whether we
have garbage and what the actual hashtable entry / lookup val are.

How did you configure?=