Verilator

While building verilator 3.823 on Debian unstable, it seg faulted on 'make test' with the following error:

make[2]: Entering directory `/tmp/buildd/verilator-3.823/test_c'
/usr/bin/perl /tmp/buildd/verilator-3.823/test_c/../bin/verilator --debug --debugi 0 --gdbbt --no-dump-tree -V
No stack.
        gdb /tmp/verilator-3.823/test_c/../verilator_bin_dbg --batch --quiet --return-child-result -ex 'run --debug --debugi 0 --gdbbt --no-dump-tree -V' -ex 'set width 0' -ex 'bt'

Program received signal SIGSEGV, Segmentation fault.
0x00002aaaaaf4304a in std::_Rb_tree_decrement(std::_Rb_tree_node_base*) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#0  0x00002aaaaaf4304a in std::_Rb_tree_decrement(std::_Rb_tree_node_base*) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1  0x00000000004d954b in std::_Rb_tree_iterator<std::pair<std::string const, int> >::operator-- (this=0x7fffffffde80) at /usr/include/c++/4.6/bits/stl_tree.h:203
#2  0x00000000004d907c in std::_Rb_tree<std::string, std::pair<std::string const, int>, std::_Select1st<std::pair<std::string const, int> >, std::less<std::string>, std::allocator<std::pair<std::string const, int> > >::_M_insert_unique (this=0x989a20, __v=...) at /usr/include/c++/4.6/bits/stl_tree.h:1277
#3  0x00000000004d8cf5 in std::map<std::string, int, std::less<std::string>, std::allocator<std::pair<std::string const, int> > >::insert (this=0x989a20, __x=...) at /usr/include/c++/4.6/bits/stl_map.h:518
#4  0x0000000000531d95 in FileLine::nameToNumber (filename=...) at ../V3Error.cpp:95
#5  0x000000000045982a in FileLine::FileLine (this=0x98b430, filename=..., lineno=0) at ../V3Error.h:289
#6  0x000000000046cfc7 in AstNetlist::AstNetlist (this=0x98b340) at ../V3AstNodes.h:4036
#7  0x000000000046d198 in V3Global::V3Global (this=0x989620) at ../V3Global.h:57
#8  0x000000000046c7ad in __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at ../Verilator.cpp:92
#9  0x000000000046c7d9 in _GLOBAL__sub_I_v3Global () at ../Verilator.cpp:635
#10 0x00000000006198fd in __libc_csu_init ()
#11 0x00002aaaab68fe40 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000404679 in _start ()
%Error: export VERILATOR_ROOT=/tmp/buildd/verilator-3.823/test_c/..
%Error: /tmp/buildd/verilator-3.823/test_c/../verilator_bin_dbg --debug --debugi 0 --gdbbt --no-dump-tree -V
%Error: Command Failed /tmp/buildd/verilator-3.823/test_c/../verilator_bin_dbg --debug --debugi 0 --gdbbt --no-dump-tree -V

The complete build log is attached.