RE: [Patch, test] Enable to prune warnings for tests defined in one exp file

["Terry Guo" <terry dot guo at arm dot com>]

> -----Original Message-----
> From: Mike Stump [mailto:mikestump@comcast.net]
> Sent: Tuesday, August 28, 2012 1:21 AM
> To: Terry Guo
> Cc: gcc-patches@gcc.gnu.org; Richard Guenther
> Subject: Re: [Patch, test] Enable to prune warnings for tests defined
> in one exp file
> 
> On Aug 27, 2012, at 1:14 AM, Terry Guo wrote:
> > This patch intends to provide a chance to prune common warning
> messages for
> > tests defined in an exp file.
> 
> > Is it OK to trunk?
> 
> Ok.
> 
> If you can find where to document this...  :-)  That'd be nice.
> 

I checked the texi files in gcc/doc folder, but can't find a suitable place.
So I resort to README.gcc in gcc/testsuite which is claimed to list notes
for those writing testcases and those writing expect scripts. Following is
the patch. Is it OK?

BR,
Terry

2012-08-30  Terry Guo  <terry.guo@arm.com>

        * README.gcc: Document new variable dg_runtest_extra_prunes.

Index: gcc/testsuite/README.gcc
===================================================================
--- gcc/testsuite/README.gcc	(revision 190795)
+++ gcc/testsuite/README.gcc	(working copy)
@@ -79,6 +79,11 @@
 
 If a test does not fit into the torture framework, use the dg framework.
 
+If some tests in an exp file need to skip same warning messages, just
define
+variable dg_runtest_extra_prunes in this exp file and let it contain this
warning
+message pattern.  This can avoid duplicating dg-prune in these cases.
+Always remember to clear this variable when leave this exp file.
+
 

 Copyright (C) 1997, 1998, 2004 Free Software Foundation, Inc.