[Bug c++/69253] [6 Regression] ICE in cxx_incomplete_type_diagnostic initializing a flexible array member with empty string

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69253

--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Feb  4 04:50:42 2016
New Revision: 233126

URL: https://gcc.gnu.org/viewcvs?rev=233126&root=gcc&view=rev
Log:
PR c++/69251 - [6 Regression] ICE in unify_array_domain on a flexible array
               member
PR c++/69253 - [6 Regression] ICE in cxx_incomplete_type_diagnostic
initializing
               a flexible array member with empty string
PR c++/69290 - [6 Regression] ICE on invalid initialization of a flexible array
               member
PR c++/69277 - [6 Regression] ICE mangling a flexible array member
PR c++/69349 - template substitution error for flexible array members

gcc/testsuite/ChangeLog:
2016-02-03  Martin Sebor  <msebor@redhat.com>

        PR c++/69251
        PR c++/69253
        PR c++/69290
        PR c++/69277
        PR c++/69349
        * g++.dg/ext/flexarray-mangle-2.C: New test.
        * g++.dg/ext/flexarray-mangle.C: New test.
        * g++.dg/ext/flexarray-subst.C: New test.
        * g++.dg/ext/flexary11.C: New test.
        * g++.dg/ext/flexary12.C: New test.
        * g++.dg/ext/flexary13.C: New test.
        * g++.dg/ext/flexary14.C: New test.
        * g++.dg/other/dump-ada-spec-2.C: Adjust.

gcc/cp/ChangeLog:
2016-02-03  Martain Sebor  <msebor@redhat.com>

        PR c++/69251
        PR c++/69253
        PR c++/69290
        PR c++/69277
        PR c++/69349
        * class.c (walk_subobject_offsets): Avoid testing the upper bound
        of a flexible array member for equality to null.
        (find_flexarrays): Remove spurious whitespace introduced in r231665.
        (diagnose_flexarrays): Avoid checking the upper bound of arrays.
        (check_flexarrays): Same.
        * decl.c (compute_array_index_type): Avoid special case for flexible
        array members.
        (grokdeclarator): Avoid calling compute_array_index_type for flexible
        array members.
        * error.c (dump_type_suffix): Revert changes introduced in r231665
        and rendered unnecessary by the changes above.
        * pt.c (tsubst):  Same.
        * tree.c (build_ctor_subob_ref): Handle flexible array members.
        * typeck2.c (digest_init_r): Revert changes introduced in r231665.
        (process_init_constructor_array): Same.
        (process_init_constructor_record): Same.

Added:
    trunk/gcc/testsuite/g++.dg/ext/flexarray-mangle-2.C
    trunk/gcc/testsuite/g++.dg/ext/flexarray-mangle.C
    trunk/gcc/testsuite/g++.dg/ext/flexarray-subst.C
    trunk/gcc/testsuite/g++.dg/ext/flexary11.C
    trunk/gcc/testsuite/g++.dg/ext/flexary12.C
    trunk/gcc/testsuite/g++.dg/ext/flexary13.C
    trunk/gcc/testsuite/g++.dg/ext/flexary14.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/error.c
    trunk/gcc/cp/mangle.c
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/tree.c
    trunk/gcc/cp/typeck2.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/other/dump-ada-spec-2.C