[Bug c/109412] [13/14 Regression] ICE in fold_convert_loc, at fold-const.cc:2627 since r13-2205-g14cfa01755a66a

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109412

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:7e312adcb70ca7d67f0c2cf238cddec9b3243ff9

commit r13-7257-g7e312adcb70ca7d67f0c2cf238cddec9b3243ff9
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Apr 27 11:35:55 2023 +0200

    c: Fix up error-recovery on functions initialized as variables [PR109412]

    The change to allow empty initializers in C broke error-recovery on the
    following testcase.  We are emitting function %qD is initialized like a
    variable error early; if the initializer is non-empty, we just emit
    another error that the initializer is invalid.  Previously if it was empty,
    we'd emit another error that scalar is being initialized by empty
    initializer (not really correct), but now we instead just try to
    build_zero_cst for the FUNCTION_TYPE and ICE on it.

    The following patch just emits the same diagnostics for the empty
    initializers as we emit for the non-empty ones.

    2023-04-27  Jakub Jelinek  <jakub@redhat.com>

            PR c/107682
            PR c/109412
            * c-typeck.cc (pop_init_level): If constructor_type is
FUNCTION_TYPE,
            reject empty initializer as invalid.

            * gcc.dg/pr109412.c: New test.

    (cherry picked from commit a1030fbf70eef5b635e4fbb904ec7209ebd137ca)