https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82152
Benjamin Buch <benni.buch at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |benni.buch at gmail dot com
--- Comment #2 from Benjamin Buch <benni.buch at gmail dot com> ---
Its the same on valid code via user defined deduction guide:
struct Base {};
template<typename T>
struct Derived : public Base {
using Base::Base;
};
Derived() -> Derived< void >;
int main() {
Derived x{};
}
$ g++ -std=c++17 main.cpp
main.cpp: In function 'int main()':
main.cpp:11:13: internal compiler error: Segmentation fault
Derived x{};
^
0xf25bdf crash_signal
../../gcc/gcc/toplev.c:325
0xa3ae4a tree_check(tree_node*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3127
0xa3ae4a build_deduction_guide
../../gcc/gcc/cp/pt.c:25495
0xa0cd8d do_class_deduction
../../gcc/gcc/cp/pt.c:25709
0xa0cd8d do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context, tree_node*, int)
../../gcc/gcc/cp/pt.c:25844
0x950893 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:6796
0x9e94c6 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19626
0x9f1958 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12968
0x9f27b8 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12793
0x9f31f9 cp_parser_declaration_statement
../../gcc/gcc/cp/parser.c:12387
0x9d0f93 cp_parser_statement
../../gcc/gcc/cp/parser.c:10848
0x9d1f00 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:11185
0x9d1fd7 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:11139
0x9e8460 cp_parser_function_body
../../gcc/gcc/cp/parser.c:21679
0x9e8460 cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:21716
0x9e8d10 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:26620
0x9e99fb cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:26536
0x9e99fb cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:19405
0x9f1958 cp_parser_simple_declaration
../../gcc/gcc/cp/parser.c:12968
0x9f27b8 cp_parser_block_declaration
../../gcc/gcc/cp/parser.c:12793
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ g++ --version
g++ (GCC) 8.0.0 20180103 (experimental)
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
