[Bug debug/81278] [8 Regression] -fcompare-debug failure (length)

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81278

--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jul  4 18:51:02 2017
New Revision: 249975

URL: https://gcc.gnu.org/viewcvs?rev=249975&root=gcc&view=rev
Log:
        PR debug/81278
        * tree-vrp.c (compare_assert_loc): Turn into a function template
        with stable template parameter.  Only test if a->e is NULL,
        !a->e == !b->e has been verified already.  Use e == NULL or
        e != NULL instead of e or ! e tests.  If stable is true, don't use
        iterative_hash_expr, on the other side allow a or b or both NULL
        and sort the NULLs last.
        (process_assert_insertions): Sort using compare_assert_loc<false>
        instead of compare_assert_loc, later sort using
        compare_assert_loc<true> before calling process_assert_insertions_for
        in a loop.  Use break instead of continue once seen NULL pointer.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vrp.c