[Bug c++/78765] New: ICE on invalid C++ code on x86_64-linux-gnu (internal compiler error: in cp_build_addr_expr_1, at cp/typeck.c:5708)

["chengniansun at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78765

            Bug ID: 78765
           Summary: ICE on invalid C++ code on x86_64-linux-gnu (internal
                    compiler error: in cp_build_addr_expr_1, at
                    cp/typeck.c:5708)
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: chengniansun at gmail dot com
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/usr/local/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 7.0.0 20161210 (experimental) [trunk revision 243516] (GCC) 
$ 
$ gcc-trunk small.C
small.C:6:42: error: ‘v’ was not declared in this scope
   static constexpr ValueType doubleval = v;
                                          ^
small.C: In function ‘int main()’:
small.C:9:52: internal compiler error: in cp_build_addr_expr_1, at
cp/typeck.c:5708
 int main() { ValueTypeInfo<ValueTypeEnum::doubleval> }
                                                    ^
0x7eb7d5 cp_build_addr_expr_1
        ../../gcc-source-trunk/gcc/cp/typeck.c:5708
0x683162 add_function_candidate
        ../../gcc-source-trunk/gcc/cp/call.c:2158
0x6848c7 add_candidates
        ../../gcc-source-trunk/gcc/cp/call.c:5491
0x67f9e4 build_user_type_conversion_1
        ../../gcc-source-trunk/gcc/cp/call.c:3842
0x680a8a implicit_conversion
        ../../gcc-source-trunk/gcc/cp/call.c:1898
0x6890dd build_integral_nontype_arg_conv(tree_node*, tree_node*, int)
        ../../gcc-source-trunk/gcc/cp/call.c:4025
0x70afa5 convert_nontype_argument
        ../../gcc-source-trunk/gcc/cp/pt.c:6434
0x711eed convert_template_argument
        ../../gcc-source-trunk/gcc/cp/pt.c:7363
0x71fa63 coerce_template_parms
        ../../gcc-source-trunk/gcc/cp/pt.c:7823
0x72199a lookup_template_class_1
        ../../gcc-source-trunk/gcc/cp/pt.c:8396
0x72199a lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
        ../../gcc-source-trunk/gcc/cp/pt.c:8738
0x836bed finish_template_type(tree_node*, tree_node*, int)
        ../../gcc-source-trunk/gcc/cp/semantics.c:3146
0x7bea14 cp_parser_template_id
        ../../gcc-source-trunk/gcc/cp/parser.c:15464
0x7becba cp_parser_class_name
        ../../gcc-source-trunk/gcc/cp/parser.c:21879
0x7af07d cp_parser_qualifying_entity
        ../../gcc-source-trunk/gcc/cp/parser.c:6293
0x7af07d cp_parser_nested_name_specifier_opt
        ../../gcc-source-trunk/gcc/cp/parser.c:5977
0x7acd20 cp_parser_simple_type_specifier
        ../../gcc-source-trunk/gcc/cp/parser.c:16793
0x7aa261 cp_parser_type_specifier
        ../../gcc-source-trunk/gcc/cp/parser.c:16464
0x7bf3d3 cp_parser_decl_specifier_seq
        ../../gcc-source-trunk/gcc/cp/parser.c:13303
0x7c9770 cp_parser_simple_declaration
        ../../gcc-source-trunk/gcc/cp/parser.c:12646
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ 
$ cat small.C
class ValueType {
  operator int();
  int m_ID;
};
class ValueTypeEnum {
  static constexpr ValueType doubleval = v;
};
template <int> class ValueTypeInfo;
int main() { ValueTypeInfo<ValueTypeEnum::doubleval> }
$