Comment 4 for bug 1681870

StacktraceTop:
 __malloc_assert (assertion=assertion@entry=0xb6d27f38 "(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)", file=file@entry=0xb6d24696 "malloc.c", line=line@entry=2403, function=<optimized out>) at malloc.c:301
 sysmalloc (nb=nb@entry=264, av=av@entry=0xb6d7a780 <main_arena>) at malloc.c:2400
 _int_malloc (av=av@entry=0xb6d7a780 <main_arena>, bytes=bytes@entry=260) at malloc.c:3862
 __GI___libc_malloc (bytes=260) at malloc.c:2925
 operator new (sz=260) at ../../../../src/libstdc++-v3/libsupc++/new_op.cc:50