Comment 2 for bug 1566072

StacktraceTop:
 __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7f79f0e34fb8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
 malloc_printerr (ar_ptr=<optimized out>, ptr=<optimized out>, str=0x7f79f0e35058 "free(): corrupted unsorted chunks", action=3) at malloc.c:5007
 _int_free (av=<optimized out>, p=<optimized out>, have_lock=1) at malloc.c:3868
 _int_realloc (av=av@entry=0x7f79f1068b20 <main_arena>, oldp=oldp@entry=0x22350f0, oldsize=oldsize@entry=960, nb=nb@entry=1024) at malloc.c:4385
 __GI___libc_realloc (oldmem=0x2235100, bytes=1008) at malloc.c:3046