https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79056
Bug ID: 79056
Summary: [C++17] ICE with broken deduction guide
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
template<typename T, typename U>
struct unique_ptr
{
template<typename V>
unique_ptr(V) { }
};
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
int main()
{
unique_ptr u(new int);
}
up.cc:8:51: error: ‘default_delete’ was not declared in this scope
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^~~~~~~~~~~~~~
up.cc:8:67: error: template argument 2 is invalid
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^
up.cc:8:51: error: ‘default_delete’ was not declared in this scope
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^~~~~~~~~~~~~~
up.cc:8:67: error: template argument 2 is invalid
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^
up.cc:8:51: error: ‘default_delete’ was not declared in this scope
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^~~~~~~~~~~~~~
up.cc:8:67: error: template argument 2 is invalid
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^
up.cc:8:51: error: ‘default_delete’ was not declared in this scope
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^~~~~~~~~~~~~~
up.cc:8:67: error: template argument 2 is invalid
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^
up.cc:8:37: internal compiler error: Segmentation fault
template<class T> unique_ptr(T*) -> unique_ptr<T, default_delete<T>;
^~~~~~~~~~
0xdb8b9f crash_signal
/home/jwakely/src/gcc/gcc/gcc/toplev.c:333
0x78fe4b cp_parser_check_for_invalid_template_id
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:2989
0x77e57e cp_parser_check_for_invalid_template_id
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:2987
0x77e57e cp_parser_simple_type_specifier
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:16942
0x77bdfd cp_parser_type_specifier
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:16496
0x77cda2 cp_parser_type_specifier_seq
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:20763
0x787931 cp_parser_type_id_1
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:20606
0x7871c6 cp_parser_trailing_type_id
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:20697
0x7871c6 cp_parser_late_return_type_opt
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:20518
0x7871c6 cp_parser_direct_declarator
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:19707
0x7871c6 cp_parser_declarator
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:19527
0x79a189 cp_parser_init_declarator
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:19061
0x7a2ce7 cp_parser_single_declaration
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:26673
0x7a2e0c cp_parser_template_declaration_after_parameters
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:26277
0x7a3842 cp_parser_explicit_template_declaration
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:26513
0x7a3842 cp_parser_template_declaration_after_export
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:26531
0x7a3e49 cp_parser_declaration
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:12438
0x7a4166 cp_parser_declaration_seq_opt
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:12365
0x7a4498 cp_parser_translation_unit
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:4369
0x7a4498 c_parse_file()
/home/jwakely/src/gcc/gcc/gcc/cp/parser.c:38366
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.
