possible je-malloc issue

Libc built today.
Start X with fvwm window manager.
Open xterm and su to root.

1. Use nedit to edit a file and close.

fvwm drops core.  If fvwm does not drop core repeat 1 until 
she does.

(gdb) bt
#0  0x4841e294 in __jemalloc_arena_mapbits_get (chunk=0x8000000, pageind=245)
    at /usr/src/lib/libc/../../contrib/jemalloc/include/jemalloc/internal/arena.h:502
#1  0x4841e2c4 in __jemalloc_arena_mapbits_allocated_get (chunk=0x8000000, 
    pageind=245)
    at /usr/src/lib/libc/../../contrib/jemalloc/include/jemalloc/internal/arena.h:581
#2  0x4841e739 in __jemalloc_arena_salloc (ptr=0x80f58e0, demote=false)
    at /usr/src/lib/libc/../../contrib/jemalloc/include/jemalloc/internal/arena.h:902
#3  0x48423dd1 in __jemalloc_isalloc (ptr=0x8000000, demote=false)
    at /usr/src/lib/libc/../../contrib/jemalloc/include/jemalloc/internal/jemalloc_internal.h:791
#4  0x4842408e in free (ptr=0x80f58e0) at jemalloc_jemalloc.c:1212
#5  0x48164b7d in XFree (data=0x80f58e0) at XlibInt.c:1701
#6  0x080c4f2f in FlocaleFreeNameProperty (ptext=0xbfbfcfb4) at Flocale.c:2363
#7  0x0806d3ab in HandlePropertyNotify (ea=0xbfbfd014) at events.c:3422
#8  0x0806c369 in dispatch_event (e=0xbfbfd044) at events.c:4135
#9  0x0806ca5f in HandleEvents () at events.c:4179
#10 0x0808e06e in main (argc=1, argv=0xbfbfd7ac) at fvwm.c:2591
(gdb) frame 4
#4  0x4842408e in free (ptr=0x80f58e0) at jemalloc_jemalloc.c:1212
1212                            usize = isalloc(ptr, config_prof);
(gdb) print *ptr
Attempt to dereference a generic pointer.
(gdb) up 1
#5  0x48164b7d in XFree (data=0x80f58e0) at XlibInt.c:1701
1701    XlibInt.c: No such file or directory.
(gdb) print *data
Attempt to dereference a generic pointer.
(gdb) up 1
#6  0x080c4f2f in FlocaleFreeNameProperty (ptext=0xbfbfcfb4) at Flocale.c:2363
2363    Flocale.c: No such file or directory.
(gdb) print *ptext
$5 = {name = 0x80f58e0 "Untitled", name_list = 0x0}

-- 
Steve