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Release note for stricter command-line option checks
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Wed, 9 Feb 2011 00:35:26 +0000 (UTC)
- Subject: Release note for stricter command-line option checks
I've applied this patch to add a release note for stricter checks on
command-line options in 4.6 - in particular, rejection of invalid --
options that were previously silently accepted (but ignored, not passed to
the linker) when linking (see PR 46410; the need for a release note was
noted in PR 47390, for which the fix is still under discussion).
Index: changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.6/changes.html,v
retrieving revision 1.111
diff -u -r1.111 changes.html
--- changes.html 8 Feb 2011 17:31:25 -0000 1.111
+++ changes.html 9 Feb 2011 00:32:36 -0000
@@ -21,6 +21,17 @@
<code><<em>machine</em>>-gcc-<<em>version</em>></code>
to run a different version of <code>gcc</code>. </li>
+ <li>GCC now has stricter checks for invalid command-line options.
+ In particular, when <code>gcc</code> was called to link object
+ files rather than compile source code, it would previously accept
+ and ignore all options starting with <code>--</code>, including
+ linker options such as <code>--as-needed</code>
+ and <code>--export-dynamic</code>, although such options would
+ result in errors if any source code was compiled. Such options,
+ if unknown to the compiler, are now rejected in all cases; if the
+ intent was to pass them to the linker, options such
+ as <code>-Wl,--as-needed</code> should be used.</li>
+
<li>Versions of the GNU C library up to and including 2.11.1
included an <a
href="http://sourceware.org/bugzilla/show_bug.cgi?id=10401";>incorrect
--
Joseph S. Myers
joseph@codesourcery.com