Date: Mon, 16 Jul 2007 19:20:30 +0200
From: Zdenek Kotala <Zdenek.Kotala@Sun.COM>
Subject: Re: compiler warnings on the buildfarm
In-reply-to: <469A60C8.6050404@kaltenbrunner.cc>
To: Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>
Cc: pgsql-hackers@postgresql.org, peter_e@gmx.net
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Stefan Kaltenbrunner wrote:
> Zdenek Kotala wrote:
>> Stefan Kaltenbrunner wrote:
>>> Zdenek Kotala wrote:
>>>> For sun studio -erroff=E_STATEMENT_NOT_REACHED is useful there. If you
>>>> want to determine warning tags for each warning add -errtags.
>>> Is that supported on all versions of sun studio(Sun WorkShop 6, Sun
>>> Studio 8,11) we have on the farm ?
>> Yes. Also on SS12.
> 
> hmm - sure about that ? I was about to submit a patch to disable some
> compiler warnings but then I noted the following discussion thread:
> 
> http://forum.java.sun.com/thread.jspa?threadID=5163903&messageID=9637391
> 
> which seems to indicate that at least the compiler installed on kudu:
> 
> http://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=kudu&dt=2007-07-15%2003:30:01
> 
> does NOT support turning of specific warnings.
> 

I tested it on cc version 5.3 and it works. See

-bash-3.00$ SUNWspro/SC6.2/bin/cc -V
cc: Sun WorkShop 6 update 2 C 5.3 Patch 111680-09 2003/05/18
usage: cc [ options] files.  Use 'cc -flags' for details
-bash-3.00$ /ws/onnv-tools/SUNWspro/SC6.2/bin/cc pokus.c
"pokus.c", line 5: warning: statement not reached
-bash-3.00$ /ws/onnv-tools/SUNWspro/SC6.2/bin/cc -errtags pokus.c
"pokus.c", line 5: warning: statement not reached (E_STATEMENT_NOT_REACHED)
-bash-3.00$ /ws/onnv-tools/SUNWspro/SC6.2/bin/cc 
-erroff=E_STATEMENT_NOT_REACHED pokus.c
-bash-3.00$


It works since Sun Workshop 4.2 (cc: WorkShop Compilers 4.2 26 Jun 1997 
C 4.2 patch 105062-01). I tested it also on SunWorkshop 2.0.1 and it 
does not work there, but I belive that nobody uses ten years old 
compiler :-).

Please, can you send me a cc -V output ( I think It should be added in log).

		Zdenek