#0  __GI___libc_free (mem=0x401) at malloc.c:2966
        ar_ptr = <optimized out>
        p = <optimized out>
        hook = 0x0
#1  0x000000f6ba13daf1 in ?? ()
No symbol table info available.
#2  0x00007f25bb653421 in __libc_start_main (main=0xf6ba13cd97, argc=1, argv=0x7ffc0fddf5f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc0fddf5e8) at ../csu/libc-start.c:291
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 4706259633241222165, 1059683812880, 140720574690800, 0, 0, -4658246282459321323, -4689939505236906987}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7ffc0fddf608, 0x7f25bca6d170}, data = {prev = 0x0, cleanup = 0x0, canceltype = 266204680}}}
        not_first_call = <optimized out>
#3  0x000000f6ba13c63a in ?? ()
No symbol table info available.