[Bug c/94755] [9/10 Regression] internal compiler error: Segmentation fault

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94755

--- Comment #2 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:26d76be7af6db75aaab662f4e93395f4ff8acb38

commit r10-7989-g26d76be7af6db75aaab662f4e93395f4ff8acb38
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Mon Apr 27 16:05:03 2020 +0200

    c-family: Fix ICE on __builtin_speculation_safe_value () [PR94755]

    When this builtin has no parameters, speculation_safe_value_resolve_call
    returns BUILT_IN_NONE, but resolve_overloaded_builtin uselessly
    dereferences the first param just to return error_mark_node immediately.

    The following patch rearranges it so that we only read the first parameter
    if fncode is not BUILT_IN_NONE.

    2020-04-27  Jakub Jelinek  <jakub@redhat.com>

            PR c/94755
            * c-common.c (resolve_overloaded_builtin): Return error_mark_node
for
            fncode == BUILT_IN_NONE before initialization of first_param.

            * c-c++-common/pr94755.c: New test.