https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100054
Bug ID: 100054
Summary: internal compiler error: in get_nsdmi
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: barry.revzin at gmail dot com
Target Milestone: ---
Reduced with creduce and then by hand:
template <typename n>
struct C {
void find() {
struct H {
C<n> c{};
};
(void)[](auto){ return H{}; };
}
};
void f() {
C<int>().find();
}
This fails on gcc trunk -std=c++20 (but worked on gcc 10.3, 10.2, 10.1) with
(https://godbolt.org/z/heEKjMn91):
<source>: In instantiation of 'void C<n>::find() [with n = int]':
<source>:12:16: required from here
<source>:5:14: internal compiler error: in get_nsdmi, at cp/init.c:598
5 | C<n> c{};
| ^
0x1d01009 internal_error(char const*, ...)
???:0
0x6bb009 fancy_abort(char const*, int, char const*)
???:0
0x7fa161 get_nsdmi(tree_node*, bool, int)
???:0
0x97f2eb finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
???:0
0x94ae62 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x91699a tsubst_tree_list(tree_node*, tree_node*, int, tree_node*)
???:0
0x91d7ef instantiate_decl(tree_node*, bool, bool)
???:0
0x95f69b instantiate_pending_templates(int)
???:0
0x7cd039 c_parse_final_cleanups()
???:0
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.
ASM generation compiler returned: 1
<source>: In instantiation of 'void C<n>::find() [with n = int]':
<source>:12:16: required from here
<source>:5:14: internal compiler error: in get_nsdmi, at cp/init.c:598
5 | C<n> c{};
| ^
0x1d01009 internal_error(char const*, ...)
???:0
0x6bb009 fancy_abort(char const*, int, char const*)
???:0
0x7fa161 get_nsdmi(tree_node*, bool, int)
???:0
0x97f2eb finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
???:0
0x94ae62 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
???:0
0x91699a tsubst_tree_list(tree_node*, tree_node*, int, tree_node*)
???:0
0x91d7ef instantiate_decl(tree_node*, bool, bool)
???:0
0x95f69b instantiate_pending_templates(int)
???:0
0x7cd039 c_parse_final_cleanups()
???:0
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.
Execution build compiler returned: 1
