[Bug c++/77790] [5/6/7 Regression] ICE on valid C++14 code when compiling with "-std=c++11": in push_access_scope, at cp/pt.c:227

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77790

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The ICE with -std=c++11 is now a bit different:

$ ./cc1plus -quiet e.cc -std=c++11
e.cc:4:44: error: ‘f’ function uses ‘auto’ type specifier without trailing
return type
     template < typename T > static auto f () { return 0; }
                                            ^
e.cc:4:44: note: deduced return type only available with -std=c++14 or
-std=gnu++14
e.cc: In substitution of ‘template<class U> int A<int>::g<U>() [with U =
<missing>]’:
e.cc:8:26:   required from here
e.cc:8:26: internal compiler error: Segmentation fault
 auto a = A < int > {}.g ();
                          ^
0xfcdf4e crash_signal
        /home/marek/src/gcc/gcc/toplev.c:333
0x7867a5 check_instantiated_arg
        /home/marek/src/gcc/gcc/cp/pt.c:17837
0x786d01 check_instantiated_args
        /home/marek/src/gcc/gcc/cp/pt.c:17909
0x7c5326 instantiate_template_1
        /home/marek/src/gcc/gcc/cp/pt.c:18009
0x7c5326 instantiate_template(tree_node*, tree_node*, int)
        /home/marek/src/gcc/gcc/cp/pt.c:18113
0x7caf35 fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, bool, bool)
        /home/marek/src/gcc/gcc/cp/pt.c:18493
0x72caff add_template_candidate_real
        /home/marek/src/gcc/gcc/cp/call.c:3164
0x72d87c add_template_candidate
        /home/marek/src/gcc/gcc/cp/call.c:3246
0x72d87c add_candidates
        /home/marek/src/gcc/gcc/cp/call.c:5481
0x72e25f build_new_method_call_1
        /home/marek/src/gcc/gcc/cp/call.c:8656
0x72e25f build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, tree_node*, int, tree_node**, int)
        /home/marek/src/gcc/gcc/cp/call.c:8856
0x84c01b cp_parser_postfix_expression
        /home/marek/src/gcc/gcc/cp/parser.c:6989
0x849954 cp_parser_unary_expression
        /home/marek/src/gcc/gcc/cp/parser.c:8100
0x853e87 cp_parser_cast_expression
        /home/marek/src/gcc/gcc/cp/parser.c:8777
0x85441d cp_parser_binary_expression
        /home/marek/src/gcc/gcc/cp/parser.c:8878
0x854ce0 cp_parser_assignment_expression
        /home/marek/src/gcc/gcc/cp/parser.c:9165
0x8550f7 cp_parser_constant_expression
        /home/marek/src/gcc/gcc/cp/parser.c:9435
0x8558e4 cp_parser_initializer_clause
        /home/marek/src/gcc/gcc/cp/parser.c:21543
0x8572d3 cp_parser_initializer
        /home/marek/src/gcc/gcc/cp/parser.c:21483
0x866996 cp_parser_init_declarator
        /home/marek/src/gcc/gcc/cp/parser.c:19329
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