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Subject: [Bug c++/99035] [9 Regression] ICE in declare_weak, at varasm.c:5930
Date: Tue, 20 Apr 2021 23:32:17 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99035

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:6496e9154309cbd911f944147da1246628e393da

commit r9-9418-g6496e9154309cbd911f944147da1246628e393da
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Feb 10 19:52:37 2021 +0100

    varasm: Fix ICE with -fsyntax-only [PR99035]

    My FE change from 2 years ago uses TREE_ASM_WRITTEN in -fsyntax-only
    mode more aggressively to avoid "expanding" functions multiple times.
    With -fsyntax-only nothing is really expanded, so I think it is accepta=
ble
    to adjust the assert and allow declare_weak at any time, with -fsyntax-=
only
    we know it is during parsing only anyway.

    2021-02-10  Jakub Jelinek  <jakub@redhat.com>

            PR c++/99035
            * varasm.c (declare_weak): For -fsyntax-only, allow even
            TREE_ASM_WRITTEN function decls.

            * g++.dg/ext/weak6.C: New test.

    (cherry picked from commit a964f494cd5a90f631b8c0c01777a9899e0351ce)=