From patchwork Thu Jan 13 18:16:34 2011
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Subject: [wwwdocs] Update gcc-4.6/changes.html for Fortran's reallocate on
 assignment
From: Tobias Burnus <burnus@net-b.de>
X-Patchwork-Id: 78797
Message-Id: <4D2F4182.2030501@net-b.de>
To: gcc patches <gcc-patches@gcc.gnu.org>,
 Gerald Pfeifer <gerald@pfeifer.com>, gfortran <fortran@gcc.gnu.org>
Date: Thu, 13 Jan 2011 19:16:34 +0100

The attached patch updates the Fortran 2008 section in the GCC 4.6 
release notes.

If you have suggestions or comments regarding this patch - or regarding 
other changes at http://gcc.gnu.org/gcc-4.6/changes.html please raise 
your voice. Otherwise, I will commit the patch as obvious.

Tobias


Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.87
diff -u -r1.87 changes.html
--- changes.html	11 Jan 2011 23:19:22 -0000	1.87
+++ changes.html	13 Jan 2011 18:13:20 -0000
@@ -327,6 +327,14 @@
 	<li>In pointer assignments it is now possible to specify the lower
 	bounds of the pointer and, for a rank-1 or a simply contiguous
 	data-target, to remap the bounds.</li>
+	<li>Automatic (re)allocation for arrays: In intrinsic assignments to
+	allocatable variables the left-hand side will be automatically
+	allocated (if unallocated) or reallocated (if the shape is different).
+	To avoid the small performance penalty, you can use, for instance,
+	for arrays <code>a(:) = ...</code> instead of <code>a = ...</code>
+	&ndash; or disable the feature using <code>-std=f95</code> or
+	<code>-fno-realloc-lhs</code>. Note: GCC does not yet support
+	(re)allocation on assignment for allocatable <em>scalar</em> variables.
       </ul>
     </li>
     <li>Fortran 2008 support has been extended: