https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77321
Bug ID: 77321
Summary: [7 Regression] crash in warn_for_memset
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
Target Milestone: ---
markus@x4 /tmp % cat crash.ii
template <typename> void foo() {
auto &a();
__builtin_memset(a, 'X', 4);
}
markus@x4 /tmp % g++ -c -Wall crash.ii
crash.ii: In function ‘void foo()’:
crash.ii:3:29: internal compiler error: Segmentation fault
__builtin_memset(a, 'X', 4);
^
0xd7904f crash_signal
../../gcc/gcc/toplev.c:335
0x7f13dc06dc2f ???
/home/markus/glibc/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x8cc6ca warn_for_memset(unsigned int, tree_node*, tree_node*, int)
../../gcc/gcc/c-family/c-common.c:11994
0x75efcf cp_parser_postfix_expression
../../gcc/gcc/cp/parser.c:6878
0x75ceac cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:8019
0x766e87 cp_parser_cast_expression
../../gcc/gcc/cp/parser.c:8696
0x76741d cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:8797
0x767ce0 cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:9084
0x76a66a cp_parser_expression
../../gcc/gcc/cp/parser.c:9253
0x76ac13 cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:10736
0x77a5cc cp_parser_statement
../../gcc/gcc/cp/parser.c:10587
0x77b664 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:10859
0x77b76f cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:10813
0x77b8cd cp_parser_function_body
../../gcc/gcc/cp/parser.c:20832
0x77b8cd cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:20868
0x77c381 cp_parser_function_definition_after_declarator
../../gcc/gcc/cp/parser.c:25565
0x77d131 cp_parser_function_definition_from_specifiers_and_declarator
../../gcc/gcc/cp/parser.c:25477
0x77d131 cp_parser_init_declarator
../../gcc/gcc/cp/parser.c:18603
0x77e5b7 cp_parser_single_declaration
../../gcc/gcc/cp/parser.c:26021
0x77e6dc cp_parser_template_declaration_after_parameters
../../gcc/gcc/cp/parser.c:25626
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
