https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93869
Bug ID: 93869
Summary: ICE in contains_struct_check with -Wmismatched-tags
upon redundant typename
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sbergman at redhat dot com
CC: msebor at gcc dot gnu.org
Target Milestone: ---
With recent GCC trunk (incl. the fix from bug 93801 comment 3, though I do not
know whether that makes a difference):
> $ cat test.cc
> namespace N { typedef int T; }
> typename N::T x;
> $ g++ -fsyntax-only -Wmismatched-tags test.cc
> test.cc:2:13: internal compiler error: Segmentation fault
> 2 | typename N::T x;
> | ^
> 0xfd962f crash_signal
> ../../src/gcc/toplev.c:328
> 0x7f55158a16af ???
>
> /usr/src/debug/glibc-2.30-34-g994e529a37/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
> 0x9a1c0f contains_struct_check(tree_node*, tree_node_structure_enum, char
> const*, int, char const*)
> ../../src/gcc/tree.h:3391
> 0x9a1c0f cp_parser_check_class_key
> ../../src/gcc/cp/parser.c:30991
> 0x9c5ad4 cp_parser_elaborated_type_specifier
> ../../src/gcc/cp/parser.c:18930
> 0x9aea83 cp_parser_type_specifier
> ../../src/gcc/cp/parser.c:17681
> 0x9afbcf cp_parser_decl_specifier_seq
> ../../src/gcc/cp/parser.c:14303
> 0x9b0600 cp_parser_simple_declaration
> ../../src/gcc/cp/parser.c:13557
> 0x9d9302 cp_parser_declaration
> ../../src/gcc/cp/parser.c:13377
> 0x9d9a82 cp_parser_translation_unit
> ../../src/gcc/cp/parser.c:4731
> 0x9d9a82 c_parse_file()
> ../../src/gcc/cp/parser.c:43716
> 0xaedd0b c_common_parse_file()
> ../../src/gcc/c-family/c-opts.c:1186
> 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.
