groff: troff: Floating point exception (core dumped)

[M Graff <explorer%flame.org@localhost>]

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I get this just about every time I build on a Xen3 DOMU running amd64 on
an older amd64 DOM0.

- --- dependall-share ---
groff: troff: Floating point exception (core dumped)
*** [signal.cat7] Error code 2

I have a core and a binary for this, but there are no symbols in the
tooldir.

netbsd-amd64-current# gdb
/local/os-build/amd64/obj/tooldir.NetBSD-4.99.66-x86_64/lib/groff/troff
/local/os-build/amd64/obj/lib/libpthread/troff.core
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This GDB was configured as "x86_64--netbsd"...(no debugging symbols found)

Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /usr/lib/libm.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libm.so.0
Reading symbols from /usr/lib/libgcc_s.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgcc_s.so.1
Reading symbols from /usr/lib/libc.so.12...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libc.so.12
Reading symbols from /usr/libexec/ld.elf_so...(no debugging symbols
found)...done.
Loaded symbols for /usr/libexec/ld.elf_so
Core was generated by `troff'.
Program terminated with signal 8, Arithmetic exception.
#0  0x00000000004021bd in dictionary::lookup ()
(gdb) where
#0  0x00000000004021bd in dictionary::lookup ()
#1  0x00000000004022cb in object_dictionary::alias ()
#2  0x000000000041daa8 in alias_macro ()
#3  0x000000000040fe01 in request::invoke ()
#4  0x000000000041c0c2 in interpolate_macro ()
#5  0x000000000041e777 in process_input_stack ()
#6  0x000000000041ee6d in process_input_file ()
#7  0x00000000004203bd in main ()
(gdb) list
No symbol table is loaded.  Use the "file" command.
(gdb)
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