[Bug c/99136] ICE in gimplify_expr, at gimplify.c:14854

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99136

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:d82f829905cfe6cb47d073825f680900274ce764

commit r11-7282-gd82f829905cfe6cb47d073825f680900274ce764
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Feb 18 22:17:52 2021 +0100

    c: Fix ICE with -fexcess-precision=standard [PR99136]

    The following testcase ICEs on i686-linux, because c_finish_return wraps
    c_fully_folded retval back into EXCESS_PRECISION_EXPR, but when the
function
    return type is void, we don't call convert_for_assignment on it that would
    then be fully folded again, but just put the retval into RETURN_EXPR's
    operand, so nothing removes it anymore and during gimplification we
    ICE as EXCESS_PRECISION_EXPR is not handled.

    This patch fixes it by not adding that EXCESS_PRECISION_EXPR in functions
    returning void, the return value is ignored and all we need is evaluate any
    side-effects of the expression.

    2021-02-18  Jakub Jelinek  <jakub@redhat.com>

            PR c/99136
            * c-typeck.c (c_finish_return): Don't wrap retval into
            EXCESS_PRECISION_EXPR in functions that return void.

            * gcc.dg/pr99136.c: New test.