StacktraceTop:
__libc_signal_restore_set (set=0xbfcd5e9c) at ../sysdeps/unix/sysv/linux/nptl-signals.h:80
__GI_raise (sig=6) at ../sysdeps/unix/sysv/linux/raise.c:48
__GI_abort () at abort.c:79
__libc_message (action=do_abort, fmt=<optimized out>) at ../sysdeps/posix/libc_fatal.c:181
malloc_printerr (str=str@entry=0xb6b437e8 "double free or corruption (fasttop)") at malloc.c:5350
StacktraceTop: signal_ restore_ set (set=0xbfcd5e9c) at ../sysdeps/ unix/sysv/ linux/nptl- signals. h:80 unix/sysv/ linux/raise. c:48 posix/libc_ fatal.c: 181 entry=0xb6b437e 8 "double free or corruption (fasttop)") at malloc.c:5350
__libc_
__GI_raise (sig=6) at ../sysdeps/
__GI_abort () at abort.c:79
__libc_message (action=do_abort, fmt=<optimized out>) at ../sysdeps/
malloc_printerr (str=str@