.
Thread 1 (process 25128):
#0  0x0000000000400eb0 in ?? ()
#1  0x0000000000401a1e in ?? ()
#2  0x00007f2093246abd in __libc_start_main (main=<value optimized out>, 
    argc=<value optimized out>, ubp_av=<value optimized out>, 
    init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff47118fc8)
    at libc-start.c:220
	result = <value optimized out>
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 1787763149410361759, 
        4197824, 140734385721296, 0, 0, -1787393315677445729, 
        -1833440775764745825}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 
      0x403c00, 0x7fff47118fd8}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 4209664}}}
	not_first_call = <value optimized out>
#3  0x0000000000400de9 in ?? ()
#4  0x00007fff47118fc8 in ?? ()
#5  0x000000000000001c in ?? ()
#6  0x0000000000000002 in ?? ()
#7  0x00007fff4711a614 in ?? ()
#8  0x00007fff4711a61a in ?? ()
#9  0x0000000000000000 in ?? ()