https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94733
Bug ID: 94733
Summary: [10 Regression] ICE: tree check: expected
identifier_node, have tree_list in is_attribute_p, at
attribs.h:155
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-10.0.1-alpha20200419 snapshot (g:717e91dbc44c6bf55a498f45f6045191ceb10a11)
ICEs when compiling the following testcase w/ -fgnu-tm:
struct [[gnu::may_alias]] pe { };
% g++-10.0.1 -fgnu-tm -c eqtzx3iu.cpp
eqtzx3iu.cpp:1:27: internal compiler error: tree check: expected
identifier_node, have tree_list in is_attribute_p, at attribs.h:155
1 | struct [[gnu::may_alias]] pe { };
| ^~
0x7bcf2c tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/tree.c:9727
0x6aa239 tree_check(tree_node const*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/tree.h:3543
0x6aa239 is_attribute_p
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/attribs.h:155
0x6abe5e tm_attr_to_mask(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/tree.h:3401
0xafbaef find_tm_attribute(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/c-family/c-attribs.c:3318
0x896740 set_method_tm_attributes
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/class.c:5092
0x896740 finish_struct_1(tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/class.c:7302
0x897b24 finish_struct(tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/class.c:7516
0x9975f3 cp_parser_class_specifier_1
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:23878
0x99969b cp_parser_class_specifier
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:24177
0x99969b cp_parser_type_specifier
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:17708
0x99a7a5 cp_parser_decl_specifier_seq
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:14356
0x99b244 cp_parser_simple_declaration
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:13610
0x9c5a32 cp_parser_declaration
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:13430
0x9c61cf cp_parser_translation_unit
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:4731
0x9c61cf c_parse_file()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/cp/parser.c:43972
0xadeaeb c_common_parse_file()
/var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200419/work/gcc-10-20200419/gcc/c-family/c-opts.c:1190
Citing Jakub's PR94106 comment 2: "Nobody really maintains the -fgnu-tm stuff
anymore".
