Comment 6 for bug 1266492

(gdb) bt
#0 pthread_once () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S:95
#1 0x00007f8dfb540994 in __backtrace (array=<value optimized out>, size=64) at ../sysdeps/ia64/backtrace.c:85
#2 0x00007f8dfb4b280b in __libc_message (do_abort=2, fmt=0x7f8dfb599fc0 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:178
#3 0x00007f8dfb4b8126 in malloc_printerr (action=3, str=0x7f8dfb5980f9 "malloc(): memory corruption", ptr=<value optimized out>) at malloc.c:6311
#4 0x00007f8dfb4bbba4 in _int_malloc (av=0x7f8dfb7d0e80, bytes=<value optimized out>) at malloc.c:4411
#5 0x00007f8dfb4bc5e6 in __libc_calloc (n=<value optimized out>, elem_size=<value optimized out>) at malloc.c:4075
#6 0x00007f8dfda14d1f in _dl_new_object (realname=0x247de20 "/lib64/libgcc_s.so.1", libname=0x7f8dfb596e3e "libgcc_s.so.1", type=2, loader=0x0, mode=-1879048191, nsid=0) at dl-object.c:77
#7 0x00007f8dfda111ae in _dl_map_object_from_fd (name=0x7f8dfb596e3e "libgcc_s.so.1", fd=6, fbp=0x7fffd2c1ace0, realname=0x247de20 "/lib64/libgcc_s.so.1", loader=0x0, l_type=2, mode=-1879048191, stack_endp=0x7fffd2c1b028, nsid=0)
    at dl-load.c:975
#8 0x00007f8dfda1236a in _dl_map_object (loader=0x0, name=0x7f8dfb596e3e "libgcc_s.so.1", type=2, trace_mode=0, mode=<value optimized out>, nsid=<value optimized out>) at dl-load.c:2274
#9 0x00007f8dfda1ca34 in dl_open_worker (a=0x7fffd2c1b250) at dl-open.c:227
#10 0x00007f8dfda181a6 in _dl_catch_error (objname=0x7fffd2c1b2a0, errstring=0x7fffd2c1b298, mallocedp=0x7fffd2c1b2af, operate=0x7f8dfda1c910 <dl_open_worker>, args=0x7fffd2c1b250) at dl-error.c:178
#11 0x00007f8dfda1c4ea in _dl_open (file=0x7f8dfb596e3e "libgcc_s.so.1", mode=-2147483647, caller_dlopen=0x0, nsid=-2, argc=8, argv=<value optimized out>, env=0x7fffd2c30020) at dl-open.c:569
#12 0x00007f8dfb568340 in do_dlopen (ptr=<value optimized out>) at dl-libc.c:86
#13 0x00007f8dfda181a6 in _dl_catch_error (objname=0x7fffd2c1b460, errstring=0x7fffd2c1b458, mallocedp=0x7fffd2c1b46f, operate=0x7f8dfb568300 <do_dlopen>, args=0x7fffd2c1b440) at dl-error.c:178
#14 0x00007f8dfb568497 in dlerror_run (name=<value optimized out>, mode=<value optimized out>) at dl-libc.c:47
#15 __libc_dlopen_mode (name=<value optimized out>, mode=<value optimized out>) at dl-libc.c:160
#16 0x00007f8dfb540895 in init () at ../sysdeps/ia64/backtrace.c:41
#17 0x00007f8dfb7e1b23 in pthread_once () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_once.S:104
#18 0x00007f8dfb540994 in __backtrace (array=<value optimized out>, size=64) at ../sysdeps/ia64/backtrace.c:85
#19 0x00007f8dfb4b280b in __libc_message (do_abort=2, fmt=0x7f8dfb599fc0 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:178
#20 0x00007f8dfb4b8126 in malloc_printerr (action=3, str=0x7f8dfb59a2b8 "free(): invalid next size (fast)", ptr=<value optimized out>) at malloc.c:6311
#21 0x00007f8dfb4bac53 in _int_free (av=0x7f8dfb7d0e80, p=0x24d52c0, have_lock=0) at malloc.c:4811