in parser.tab.cpp file ,when this line is called, there is a crash
yyla.kind = yytranslate (yylex (&yyla.value, &yyla.location));
Thread 1 "test_parser_mai" received signal SIGILL, Illegal instruction.
0x000000fff5cdd548 in vtable for cxxabiv1::si_class_type_info () from /lib64/libstdc++.so.6
(gdb) bt
0 0x000000fff5cdd548 in vtable for cxxabiv1::si_class_type_info () from /lib64/libstdc++.so.6
in parser.tab.cpp file ,when this line is called, there is a crash yyla.kind = yytranslate (yylex (&yyla.value, &yyla.location)); Thread 1 "test_parser_mai" received signal SIGILL, Illegal instruction. 0x000000fff5cdd548 in vtable for cxxabiv1::si_class_type_info () from /lib64/libstdc++.so.6 (gdb) bt
0 0x000000fff5cdd548 in vtable for cxxabiv1::si_class_type_info () from /lib64/libstdc++.so.6
flex version is 2.6.4