https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95719
Bug ID: 95719
Summary: SEGV in tree_check
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sbergman at redhat dot com
Target Milestone: ---
With a locally-built recent GCC 11 trunk (git rev
48b6386f5d0bdcbe5c901678a043516d544a9f7f), but not with e.g.
gcc-c++-10.1.1-1.fc32.x86_64:
> $ cat test.cc
> struct S1 { virtual ~S1(); };
> struct S2 {
> virtual ~S2();
> virtual void f();
> };
> struct S3 final: S1, S2 { using S2::f; };
> void g(S3 & s) { s.f(); }
> $ g++ -fsyntax-only test.cc
> test.cc: In function ‘void g(S3&)’:
> test.cc:7:22: internal compiler error: Segmentation fault
> 7 | void g(S3 & s) { s.f(); }
> | ^
> 0x100471f crash_signal
> ../../src/gcc/toplev.c:328
> 0x7f245b447aaf ???
>
> /usr/src/debug/glibc-2.31-17-gab029a2801/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
> 0x8afd41 tree_check(tree_node*, char const*, int, char const*, tree_code)
> ../../src/gcc/tree.h:3300
> 0x8afd41 lookup_vfn_in_binfo(tree_node*, tree_node*)
> ../../src/gcc/cp/class.c:2459
> 0x89f872 build_over_call
> ../../src/gcc/cp/call.c:8697
> 0x8a1a2c build_new_method_call_1
> ../../src/gcc/cp/call.c:10352
> 0x8a294f build_new_method_call(tree_node*, tree_node*, vec<tree_node*, va_gc,
> vl_embed>**, tree_node*, int, tree_node**, int)
> ../../src/gcc/cp/call.c:10427
> 0x9d408c cp_parser_postfix_expression
> ../../src/gcc/cp/parser.c:7481
> 0x9b61ca cp_parser_binary_expression
> ../../src/gcc/cp/parser.c:9609
> 0x9b7d2e cp_parser_assignment_expression
> ../../src/gcc/cp/parser.c:9914
> 0x9b8052 cp_parser_expression
> ../../src/gcc/cp/parser.c:10082
> 0x9baee8 cp_parser_expression_statement
> ../../src/gcc/cp/parser.c:11742
> 0x9c6290 cp_parser_statement
> ../../src/gcc/cp/parser.c:11538
> 0x9c7b68 cp_parser_statement_seq_opt
> ../../src/gcc/cp/parser.c:11889
> 0x9c7c48 cp_parser_compound_statement
> ../../src/gcc/cp/parser.c:11839
> 0x9df215 cp_parser_function_body
> ../../src/gcc/cp/parser.c:23115
> 0x9df215 cp_parser_ctor_initializer_opt_and_function_body
> ../../src/gcc/cp/parser.c:23166
> 0x9e253d cp_parser_function_definition_after_declarator
> ../../src/gcc/cp/parser.c:29062
> 0x9e3529 cp_parser_function_definition_from_specifiers_and_declarator
> ../../src/gcc/cp/parser.c:28978
> 0x9e3529 cp_parser_init_declarator
> ../../src/gcc/cp/parser.c:20721
> 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.
