ITAGAKI Takahiro <itagaki.takahiro@oss.ntt.co.jp> writes:
> Hi, I found the cause.
> ...
> Actual error occurs in vfprintf() because act->name can be NULL.
> sprintf(..., "%s", NULL) could work on some platform (the result is '(null)'),
> but it crashes on Windows (msvcrt). We need to avoid passing NULLs as
> arguments to "%s" format for printf families.
Hmm, Windows is hardly the only platform where that would crash.
I'm surprised we don't have more buildfarm members complaining about
this.
regards, tom lane