#0  0x000000000040ecb1 in free ()
#1  0x00000000004022b1 in ?? ()
#2  0x00007f6b4886b5a6 in __libc_start_main (main=0x401f7e <mmap@plt+422>, 
    argc=1, ubp_av=0x7fff51c890f8, init=0x4110b0, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff51c890e8)
    at libc-start.c:220
	result = <value optimized out>
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {4264112, 
        -663769111578990551, 4201968, 140734565486832, 0, 0, 
        664124898726455337, 585257463427049513}, mask_was_saved = 0}}, 
  priv = {pad = {0x0, 0x0, 0x1, 0x401f7e}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 1}}}
	not_first_call = <value optimized out>
#3  0x0000000000401e19 in ?? ()
#4  0x00007fff51c890e8 in ?? ()
#5  0x000000000000001c in ?? ()
#6  0x0000000000000001 in ?? ()
#7  0x00007fff51c896f3 in ?? ()
#8  0x0000000000000000 in ?? ()