StacktraceTop: ?? () ?? () __libc_start_main (main=0x403c40, argc=8, ubp_av=0x7fffb9c165d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffb9c165c8) at libc-start.c:226 ?? () ?? ()
StacktraceTop: 0x7fffb9c165d8, init=<optimized out>, fini=<optimized out>, rtld_fini= <optimized out>, stack_end= 0x7fffb9c165c8) at libc-start.c:226
?? ()
?? ()
__libc_start_main (main=0x403c40, argc=8, ubp_av=
?? ()
?? ()