StacktraceTop: __libc_message (do_abort=do_abort@entry=1, fmt=fmt@entry=0x7f590694c1a8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175 malloc_printerr (ptr=<optimized out>, str=0x7f59069482fa "free(): invalid pointer", action=1) at malloc.c:4965 _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3834 __GI___libc_free (mem=<optimized out>) at malloc.c:2950 ?? ()
StacktraceTop: do_abort@ entry=1, fmt=fmt@ entry=0x7f59069 4c1a8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/ posix/libc_ fatal.c: 175
__libc_message (do_abort=
malloc_printerr (ptr=<optimized out>, str=0x7f59069482fa "free(): invalid pointer", action=1) at malloc.c:4965
_int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3834
__GI___libc_free (mem=<optimized out>) at malloc.c:2950
?? ()