http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60376

            Bug ID: 60376
           Summary: [4.9 Regression] ICE with invalid use of using
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Keywords: error-recovery, ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following invalid testcase (compiled with "-std=c++1y") triggers
an ICE on trunk:

====================================
struct A
{
  int foo();
};

template<typename> void bar()
{
  using (A().foo);
}
====================================

bug.cc: In function 'void bar()':
bug.cc:8:9: error: expected nested-name-specifier before '(' token
   using (A().foo);
         ^
bug.cc:8:9: error: expected unqualified-id before '(' token
bug.cc:8:9: error: expected ';' before '(' token
bug.cc:8:18: internal compiler error: in type_dependent_expression_p, at
cp/pt.c:20901
   using (A().foo);
                  ^
0x6049a1 type_dependent_expression_p(tree_node*)
        ../../gcc/gcc/cp/pt.c:20900
0x72d994 finish_expr_stmt(tree_node*)
        ../../gcc/gcc/cp/semantics.c:686
0x6b4788 cp_parser_statement
        ../../gcc/gcc/cp/parser.c:9473
0x6b5559 cp_parser_statement_seq_opt
        ../../gcc/gcc/cp/parser.c:9745
0x6b56c6 cp_parser_compound_statement
        ../../gcc/gcc/cp/parser.c:9699
0x6c667b cp_parser_function_body
        ../../gcc/gcc/cp/parser.c:18694
0x6c667b cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc/gcc/cp/parser.c:18730
0x6cdc12 cp_parser_function_definition_after_declarator
        ../../gcc/gcc/cp/parser.c:22843
0x6ceab1 cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc/gcc/cp/parser.c:22755
0x6ceab1 cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:16589
0x6cee4a cp_parser_single_declaration
        ../../gcc/gcc/cp/parser.c:23164
0x6cf134 cp_parser_template_declaration_after_export
        ../../gcc/gcc/cp/parser.c:22966
0x6da4d9 cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10947
0x6d8fc8 cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10869
0x6da87a cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:4014
0x6da87a c_parse_file()
        ../../gcc/gcc/cp/parser.c:31590
0x7f9fe3 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1060
Please submit a full bug report, [etc.]

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