[Bug middle-end/93874] ICE due to command line options

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93874

--- 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:2473c81cb2d4627f2d72310f4eca951c6084b596

commit r10-6837-g2473c81cb2d4627f2d72310f4eca951c6084b596
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Tue Feb 25 10:21:34 2020 +0100

    pass_manager: Fix ICE with -fdump-passes -fdisable-tree-* [PR93874]

    dump_passes pushes a dummy function for which it evaluates the gates
    and checks whether the pass is enabled or disabled.
    Unfortunately, if any -fdisable-*-*/-fenable-*-* options were seen,
    we ICE during is_pass_explicitly_enabled_or_disabled because slot
    is non-NULL then and the code will do:
      cgraph_uid = func ? cgraph_node::get (func)->get_uid () : 0;
    but the dummy function doesn't have a cgraph node.

    So, either we need to create and then remove a cgraph node for the dummy
    function like the following patch, or function.c would need to export the
    in_dummy_function flag (or have some way to query that flag from other TUs)
    and we'd need to check it in is_pass_explicitly_enabled_or_disabled.

    2020-02-25  Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/93874
        * passes.c (pass_manager::dump_passes): Create a cgraph node for the
        dummy function and remove it at the end.

        * gcc.dg/pr93874.c: New test.