https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90623
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-05-25
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Ouch, it actually ICEs:
$ xg++ -c 90623.C -std=c++17
90623.C: In instantiation of ‘main()::<lambda(auto:4 ...)> [with auto:4 = {int,
int, int}]’:
90623.C:15:46: required from here
90623.C:9:21: error: redeclaration of ‘const int xs#1’
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: note: ‘const int xs#1’ previously declared here
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: error: redeclaration of ‘const int xs#0’
90623.C:9:21: note: ‘const int xs#0’ previously declared here
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: error: redeclaration of ‘const int xs#2’
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: note: ‘const int xs#2’ previously declared here
90623.C:9:21: error: redeclaration of ‘const int xs#2’
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: note: ‘const int xs#2’ previously declared here
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: error: redeclaration of ‘const int xs#0’
90623.C:9:21: note: ‘const int xs#0’ previously declared here
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: error: redeclaration of ‘const int xs#1’
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
90623.C:9:25: note: ‘const int xs#1’ previously declared here
90623.C:8:12: error: designator order for field ‘main()::<lambda(auto:4 ...)>
[with auto:4 = {int, int, int}]::<lambda(auto:5)>::<xs#1 capture>’ does not
match declaration order in ‘main()::<lambda(auto:4 ...)> [with auto:4 = {int,
int, int}]::<lambda(auto:5)>’
8 | return [=](auto f) {
| ^~~~~~~~~~~~~
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 | // other version without fold expression // same problem
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 | //
(void)std::initializer_list<int>{((void)call_cart(f,xs,xs...),0)...};
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12 | };
| ~
90623.C: In instantiation of ‘main()::<lambda(auto:4 ...)> [with auto:4 = {int,
int, int}]::<lambda(auto:5)> [with auto:5 = main()::<lambda(int, int)>]’:
90623.C:17:56: required from here
90623.C:9:21: internal compiler error: in insert_capture_proxy, at
cp/lambda.c:311
9 | (call_cart(f, xs, xs... ), ...); // ok with gcc8 // error with
gcc9
| ^~
0x99e0a1 insert_capture_proxy(tree_node*)
/home/mpolacek/src/gcc/gcc/cp/lambda.c:311
0xab3331 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:17137
0xab271c tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:17036
0xab4d00 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:17330
0xad7289 instantiate_decl(tree_node*, bool, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:24760
0x95f8d2 maybe_instantiate_decl
/home/mpolacek/src/gcc/gcc/cp/decl2.c:5303
0x9605b6 mark_used(tree_node*, int)
/home/mpolacek/src/gcc/gcc/cp/decl2.c:5459
0x86267d build_over_call
/home/mpolacek/src/gcc/gcc/cp/call.c:8646
0x852ef0 build_op_call_1
/home/mpolacek/src/gcc/gcc/cp/call.c:4768
0x8530b2 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
/home/mpolacek/src/gcc/gcc/cp/call.c:4797
0xb0f66a finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
/home/mpolacek/src/gcc/gcc/cp/semantics.c:2601
0xa0cde9 cp_parser_postfix_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:7375
0xa0f681 cp_parser_unary_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:8461
0xa10adb cp_parser_cast_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:9346
0xa10bc8 cp_parser_binary_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:9449
0xa11986 cp_parser_assignment_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:9747
0xa11d11 cp_parser_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:9914
0xa07a42 cp_parser_primary_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:5316
0xa0c125 cp_parser_postfix_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:7167
0xa0f681 cp_parser_unary_expression
/home/mpolacek/src/gcc/gcc/cp/parser.c:8461
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