SIGSEGV in 23.list.cons --trace

$  gdb -q 23.list.cons 
Using host libthread_db library "/lib64/libthread_db.so.1".
(gdb) run --trace
Starting program: /build/sebor/stdcxx-4.2.1-gcc-4.3.0-15d/tests/23.list.cons --trace
[Thread debugging using libthread_db enabled]
# INFO (S1) (10 lines):
# TEXT: 
# COMPILER: gcc 4.3.0, __VERSION__ = "4.3.0"
# ENVIRONMENT: x86_64/LP64 running linux-elf (Fedora release 8 (Werewolf)) with glibc 2.7
# FILE: 23.list.cons.cpp
# COMPILED: May  7 2008, 14:06:41
# COMMENT: 
############################################################

# CLAUSE: lib.list.cons

# ITRACE_NOTE (S0) (5 lines):
# TEXT: std::list<UserPOD>::list() tests disabled
# CLAUSE: lib.list.cons
# FILE: 23.containers.cpp
# LINE: 1040

# INFO (S1) (3 lines):
# TEXT: std::list<UserPOD>::list()
# CLAUSE: lib.list.cons

[New Thread 46912501818272 (LWP 8153)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46912501818272 (LWP 8153)]
0x0000000000449a55 in _rw_fmtxarrayv (pbuf=0x7fffef954da8, 
    pbufsize=0x7fffef954c58, fmt=0x7fffef954ac3 "", va=0x7fffef953b90)
    at /home/sebor/stdcxx-4.2.1/tests/src/value.cpp:834
834                               px == pelem);                   // '<'
(gdb) where
#0  0x0000000000449a55 in _rw_fmtxarrayv (pbuf=0x7fffef954da8, 
    pbufsize=0x7fffef954c58, fmt=0x7fffef954ac3 "", va=0x7fffef953b90)
    at /home/sebor/stdcxx-4.2.1/tests/src/value.cpp:834
#1  0x0000000000449cb1 in _rw_fmtxarray (pbuf=0x7fffef954da8, 
    pbufsize=0x7fffef954c58, fmt=0x7fffef954ac0 "X=*")
    at /home/sebor/stdcxx-4.2.1/tests/src/value.cpp:862
#2  0x000000000043fd00 in _rw_vasnprintf_ext (pspec=0x7fffef9541c0, paramno=2, 
    buf=@0x7fffef954c10, fmt=0x7fffef954ac0 "X=*", pva=0x7fffef954c40)
    at /home/sebor/stdcxx-4.2.1/tests/src/printf.cpp:2503
#3  0x000000000043eb86 in _rw_pvasnprintf (buf=@0x7fffef954c10, 
    fmt=0x44f42c " expected \"%{X=*}\", got null", pva=0x7fffef954c40)
    at /home/sebor/stdcxx-4.2.1/tests/src/printf.cpp:809
#4  0x00000000004435ce in rw_vasnprintf (pbuf=0x7fffef954da8, 
    pbufsize=0x7fffef954c58, 
    fmt=0x44f418 "line %d. %{$FUNCALL} expected \"%{X=*}\", got null", 
    varg=0x7fffef954e90) at /home/sebor/stdcxx-4.2.1/tests/src/printf.cpp:1013
#5  0x0000000000433550 in _rw_vissue_diag (diag=diag_assert, severity=0, 
    file=0x0, line=65, 
    fmt=0x44f418 "line %d. %{$FUNCALL} expected \"%{X=*}\", got null", 
    va=0x7fffef954e90) at /home/sebor/stdcxx-4.2.1/tests/src/driver.cpp:1262
#6  0x0000000000433bda in _rw_vdiag (diag=diag_assert, severity=0, file=0x0, 
    line=65, 
    fmt=0x44f418 "line %d. %{$FUNCALL} expected \"%{X=*}\", got null", 
    va=0x7fffef954e90) at /home/sebor/stdcxx-4.2.1/tests/src/driver.cpp:1446
#7  0x000000000043406d in rw_assert (success=1, file=0x0, line=65, 
    fmt=0x44f418 "line %d. %{$FUNCALL} expected \"%{X=*}\", got null")
    at /home/sebor/stdcxx-4.2.1/tests/src/driver.cpp:1499
#8  0x000000000042a5b5 in test_cons<UserPOD, std::allocator<UserPOD> > (
    rng=@0x6873a8, tdata=@0x7fffef9552b0)
    at /home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp:538
#9  0x000000000042b322 in test_cons<UserPOD, std::allocator<UserPOD> > (
    tdata=@0x7fffef9552b0)
    at /home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp:952
#10 0x000000000042db20 in _rw_dispatch<UserPOD, std::allocator<UserPOD> > (
    farray=0x44f5c0, func=@0x7fffef9554c0, tcase=@0x467f40)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:900
#11 0x000000000042dea4 in _rw_dispatch<UserPOD> (farray=0x44f5c0, 
    func=@0x7fffef9554c0, tcase=@0x467f40)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:913
#12 0x000000000042bf81 in _rw_dispatch (farray=0x44f5c0, func=@0x7fffef9554c0, 
    tcase=@0x467f40)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:931
#13 0x000000000042d146 in _rw_test_case (func=@0x7fffef9554c0, 
    tcase=@0x467f40, test_callback=0, farray=0x44f5c0)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:1001
#14 0x000000000042d26e in _rw_run_cases (func=@0x7fffef9554c0, test=@0x44f5e0)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:1056
#15 0x000000000042d4e2 in _rw_run_test ()
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:1191
#16 0x00000000004346d7 in rw_vtest (argc=2, argv=0x7fffef955c88, 
    file_name=0x44f168 "/home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp", clause=0x44f158 "lib.list.cons", comment=0x0, 
    fun=0x42d27f <_rw_run_test>, 
    optstr=0x689410 "|-no-exceptions# |-no-exception-safety# |-self-ref~ |-UserPOD~ |-UserClass~ |-allocator~ |-UserAlloc~ |-InputIterator~ |-ForwardIterator~ |-BidirectionalIterator~ |-RandomAccessIterator~ |-pointer~ |-"..., 
    va=0x7fffef9557c0) at /home/sebor/stdcxx-4.2.1/tests/src/driver.cpp:1056
#17 0x0000000000434b80 in rw_test (argc=2, argv=0x7fffef955c88, 
    fname=0x44f168 "/home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp", clause=0x44f158 "lib.list.cons", comment=0x0, 
    testfun=0x42d27f <_rw_run_test>, 
    optstr=0x689410 "|-no-exceptions# |-no-exception-safety# |-self-ref~ |-UserPOD~ |-UserClass~ |-allocator~ |-UserAlloc~ |-InputIterator~ |-ForwardIterator~ |-BidirectionalIterator~ |-RandomAccessIterator~ |-pointer~ |-"...)
    at /home/sebor/stdcxx-4.2.1/tests/src/driver.cpp:1154
#18 0x000000000042c8c4 in _rw_run_test (argc=2, argv=0x7fffef955c88, 
    file=0x44f168 "/home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp", clause=0x44f158 "lib.list.cons", container=ContainerIds::List, 
    test_callback=0, func_array=0x44f5c0, tests=0x44f5e0, test_count=9)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:1348
#19 0x000000000042c938 in rw_run_cont_test (argc=2, argv=0x7fffef955c88, 
    file=0x44f168 "/home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp", clause=0x44f158 "lib.list.cons", container=ContainerIds::List, 
    farray=0x44f5c0, tests=0x44f5e0, count=9)
    at /home/sebor/stdcxx-4.2.1/tests/src/23.containers.cpp:1384
#20 0x00000000004034c5 in main (argc=2, argv=0x7fffef955c88)
    at /home/sebor/stdcxx-4.2.1/tests/containers/23.list.cons.cpp:998
(gdb)