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Subject: [Bug c/99324] [8/9 Regression] ICE in mark_addressable, at
 gimple-expr.c:918 since r6-314
Date: Tue, 20 Apr 2021 23:33:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99324

--- Comment #10 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:12cd8e1b690a22c478f91671dd7cf5f6cf8332a7

commit r9-9428-g12cd8e1b690a22c478f91671dd7cf5f6cf8332a7
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Mar 3 09:55:19 2021 +0100

    c-family: Avoid ICE on va_arg [PR99324]

    build_va_arg calls the middle-end mark_addressable, which e.g. requires
that
    cfun is non-NULL.  The following patch calls instead
c_common_mark_addressable_vec
    which is the c-family variant similarly to the FE c_mark_addressable and
    cxx_mark_addressable, except that it doesn't error on addresses of regi=
ster
    variables.  As the taking of the address is artificial for the .VA_ARG
    ifn and when that is lowered goes away, it is similar case to the vector
    subscripting for which c_common_mark_addressable_vec has been added.

    2021-03-03  Jakub Jelinek  <jakub@redhat.com>

            PR c/99324
            * c-common.c (build_va_arg): Call c_common_mark_addressable_vec
            instead of mark_addressable.  Fix a comment typo -
            neutrallly -> neutrally.

            * gcc.c-torture/compile/pr99324.c: New test.

    (cherry picked from commit 0e87dc86eb56f732a41af2590f0b807031003fbe)=