https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86002
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot
gnu.org
Ever confirmed|0 |1
Last reconfirmed| |2020-07-23
Status|UNCONFIRMED |ASSIGNED
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
GCC 9 ICEs
86002.C: In instantiation of ‘int f(T) [with T = X]’:
86002.C:15:17: required from here
86002.C:7:30: internal compiler error: in tsubst_copy, at cp/pt.c:15680
7 | if constexpr (requires { t.i; })
| ^
0xa07611 tsubst_copy
/home/mpolacek/src/gcc9/gcc/cp/pt.c:15680
0xa1dd78 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:19676
0xa1e716 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:19794
0xa16968 tsubst_non_call_postfix_expression
/home/mpolacek/src/gcc9/gcc/cp/pt.c:18159
0xa1c97b tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:19455
0xa16347 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:18067
0x8a018e tsubst_simple_requirement
/home/mpolacek/src/gcc9/gcc/cp/constraint.cc:1778
0x8a018e tsubst_requirement
/home/mpolacek/src/gcc9/gcc/cp/constraint.cc:1836
0x8a018e tsubst_requirement_body
/home/mpolacek/src/gcc9/gcc/cp/constraint.cc:1859
0x8a018e tsubst_requires_expr(tree_node*, tree_node*, int, tree_node*)
/home/mpolacek/src/gcc9/gcc/cp/constraint.cc:1891
0xa1e641 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:19782
0xa16347 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:18067
0xa11390 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:17417
0xa11afb tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:17472
0xa34241 instantiate_decl(tree_node*, bool, bool)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:24975
0xa34c1a instantiate_pending_templates(int)
/home/mpolacek/src/gcc9/gcc/cp/pt.c:25091
0x915c43 c_parse_final_cleanups()
/home/mpolacek/src/gcc9/gcc/cp/decl2.c:4818
But GCC 10+ compiles it fine.
