[Bug go/86535] FreeBSD/PowerPC64 - Building Go Frontend support for gcc 7.3.0 fails

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86535

--- Comment #31 from Ian Lance Taylor <ian at airs dot com> ---
> runtime: len(sigtable)=33 _NSIG=32
> fatal error: bad sigtable len

This error means that the sigtable generated by mksigtab.sh does not match the
value of _NSIG in the file generated by mksysinfo.sh.  You'll need to figure
out why there is a discrepancy and resolve it.