[Bug ipa/120146] [15 Regression] ICE: SIGSEGV in all_refs_explicit_p (cgraph.h:3201) with -O -fopenacc

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120146

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-15 branch has been updated by Richard Biener
<rgue...@gcc.gnu.org>:

https://gcc.gnu.org/g:47e830211d39b5efb14144bbdaf8f2d83ba8375e

commit r15-9654-g47e830211d39b5efb14144bbdaf8f2d83ba8375e
Author: Richard Biener <rguent...@suse.de>
Date:   Wed May 7 10:20:55 2025 +0200

    ipa/120146 - deal with vanished varpool nodes in IPA PTA

    I don't understand why they vanish when still refered to, but
    lets deal with that in a conservative way.

            PR ipa/120146
            * tree-ssa-structalias.cc (create_variable_info_for): If
            the symtab cannot tell us whether all refs to a variable
            are explicit assume they are not.

            * g++.dg/ipa/pr120146.C: New testcase.

    (cherry picked from commit b38e3a7196d25bc8bcb1fe55da7663745cea9470)