[patch][gcc47] Deprecate -fconserve-space

[Steven Bosscher]

On Mon, Jun 4, 2012 at 9:45 PM, Jason Merrill <jason@redhat.com> wrote:
> In wwwdocs I would also mention that the flag has no effect on most targets.

How about this:

Index: htdocs/gcc-4.7/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v
retrieving revision 1.110
diff -u -r1.110 changes.html
--- htdocs/gcc-4.7/changes.html	1 Jun 2012 09:27:10 -0000	1.110
+++ htdocs/gcc-4.7/changes.html	4 Jun 2012 20:29:09 -0000
@@ -15,6 +15,14 @@
 <h2>Caveats</h2>

   <ul>
+    <li><p>The <code>-fconserve-space</code> flag has been
+    deprecated.  The flag had no effect for most targets: only
+    targets without a global <code>.bss</code> section and without
+    support for switchable sections.  Furthermore, the flag only
+    had an effect for G++, where it could result in wrong semantics
+    (please refer to the GCC manual for further details).
+    The flag will be removed in GCC 4.8</p></li>
+
     <li><p>Support for a number of older systems and recently
     unmaintained or untested target ports of GCC has been declared
     obsolete in GCC 4.7.  Unless there is activity to revive them, the

?

>  In fact, I'm not sure it affects any targets that we still actually
> support; are there any a.out targets left?

There is still a file config/arm/aout.h, and there appears to be code
in config/cris/cris.c to support an unnamed non-ELF target that may be
a.out. But it's hard to tell what other targets are doing.

Ciao!
Steven