https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103379
Bug ID: 103379
Summary: [12 Regression] ICE: tree check: expected class
'type', have 'declaration' (namespace_decl) in
comptypes, at cp/typeck.c:1544
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-12.0.0-alpha20211121 snapshot (g:da17c304e22ba256eba0b03710aa329115163b08)
ICEs when compiling the following testcase, extracted from
test/CXX/dcl.dcl/basic.namespace/namespace.udecl/p7-cxx20.cpp from the clang
13.0.0 test suite, w/ -std=c++20:
namespace Nine {
namespace Q {
enum class Bob { a };
using Bob::a;
}
struct Foo {
using Q::a;
using Q::Bob::a;
};
}
% gcc-12.0.0 -std=c++20 -c tjgp3kjm.cpp
tjgp3kjm.cpp:9:17: internal compiler error: tree check: expected class 'type',
have 'declaration' (namespace_decl) in comptypes, at cp/typeck.c:1544
9 | using Q::Bob::a;
| ^
0x862e17 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/tree.c:8752
0x72ded8 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/tree.h:3564
0x72ded8 comptypes(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/typeck.c:1544
0xa84878 push_class_level_binding_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/name-lookup.c:5490
0xa84a1e push_class_level_binding(tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/name-lookup.c:5549
0xa84a1e pushdecl_class_level(tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/name-lookup.c:5284
0xb62567 finish_member_declaration(tree_node*)
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/semantics.c:3562
0xa98b81 finish_using_decl
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:21338
0xadd229 cp_parser_using_declaration
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:21469
0xab55e6 cp_parser_member_specification_opt
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:26668
0xab55e6 cp_parser_class_specifier_1
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:25738
0xab7ab7 cp_parser_class_specifier
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:26055
0xab7ab7 cp_parser_type_specifier
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:19220
0xab8a54 cp_parser_decl_specifier_seq
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:15794
0xab99d7 cp_parser_simple_declaration
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:15042
0xaeb015 cp_parser_declaration
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:14855
0xaea4f9 cp_parser_toplevel_declaration
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:14876
0xaea4f9 cp_parser_declaration_seq_opt
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:14629
0xaea953 cp_parser_namespace_body
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:21250
0xaea953 cp_parser_namespace_definition
/var/tmp/portage/sys-devel/gcc-12.0.0_alpha20211121/work/gcc-12-20211121/gcc/cp/parser.c:21228
