bin/50006: stupid diagnostic message from cpp(1)

[dholland%netbsd.org@localhost]

>Number:         50006
>Category:       bin
>Synopsis:       stupid diagnostic message from cpp(1)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 27 19:35:00 +0000 2015
>Originator:     David A. Holland
>Release:        NetBSD 7.99.17 and 7.0_RC1 (as of today)
>Organization:
>Environment:
System: NetBSD macaran 7.99.17 NetBSD 7.99.17 (MACARAN) #26: Fri May 22 18:22:29 EDT 2015  dholland@macaran:/usr/src/sys/arch/amd64/compile/MACARAN amd64
Architecture: x86_64
Machine: amd64
>Description:

   % cpp < .
   cc1: fatal error: stdout: No such file or directory
   compilation terminated.

similarly,

   % cpp .
   cc1: fatal error: .: No such file or directory
   compilation terminated.

Not only is it printing the wrong (probably uninitialized) errno, but
it's got its input and output mixed up.

>How-To-Repeat:

Run calendar -a from /etc/daily on a system where someone has a
~/.calendar directory, and discover a strange message in the daily
output.

>Fix:

Easy once someone goes and tracks down where in gcc the print is
coming from.