[Bug lto/65475] [5 Regression] ICE in odr_vtable_hasher::equal (Segmentation fault)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65475

--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Mon Mar 23 00:17:07 2015
New Revision: 221582

URL: https://gcc.gnu.org/viewcvs?rev=221582&root=gcc&view=rev
Log:

    PR ipa/65475
    * ipa-devirt.c: Include demangle.h
    (odr_type_d): Add field rtti_broken.
    (odr_subtypes_equivalent_p): Do not require name to match.
    (compare_virtual_tables): Fix typo; if type already has ODR violation,
    bypass the tests; be ready for function referneces in vtables that are
    not DECL_VIRTUAL; make warnings to be OPT_Wodr.
    (warn_odr): Give up for nameless types.
    (warn_types_mismatch): Report mismatch in mangled names;
    report mismatch in anonymous namespaces; look into component types to
    give useful error; report when mismatch is dragged in from other ODR
    type.
    (odr_types_equivalent_p): Match types for being polymorphic; avoid
    duplicated diagnostics.
    (add_type_duplicate): Reorder checks so more informative ones come
    first; fix typo; do not output "the extra base is defined here" when
    we did not warn.
    (BINFO_N_BASE_BINFOS): Relax sanity check.
    * g++.dg/lto/pr65475b_0.C: New testcase.
    * g++.dg/lto/pr65475b_1.C: New testcase.
    * g++.dg/lto/pr65475c_0.C: New testcase.
    * g++.dg/lto/pr65475c_1.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/lto/pr65475b_0.C
    trunk/gcc/testsuite/g++.dg/lto/pr65475b_1.C
    trunk/gcc/testsuite/g++.dg/lto/pr65475c_0.C
    trunk/gcc/testsuite/g++.dg/lto/pr65475c_1.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-devirt.c
    trunk/gcc/testsuite/ChangeLog