Now that -Wnonnull-comare has been split out of -Wnonnull, we should also update the porting_to text. Is this sufficient?
Index: porting_to.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-6/porting_to.html,v retrieving revision 1.15 diff -u -r1.15 porting_to.html --- porting_to.html 23 Feb 2016 10:13:29 -0000 1.15 +++ porting_to.html 25 Feb 2016 12:17:00 -0000 @@ -388,12 +388,12 @@ the indentation of the source was fixed instead. </p> -<h2>Enhanced <code>-Wnonnull</code></h2> +<h2>-Wnonnull-compare</h2> <p> -The <code>-Wnonnull</code> warning has been improved so that it also warns -about comparing parameters declared as <code>nonnull</code> with -<code>NULL</code>. For example, the compiler will warn about the -following code: +A new warning <code>-Wnonnull-compare</code> was added to <code>-Wall</code>. +It warns about comparing parameters declared as <code>nonnull</code> with +<code>NULL</code>. For example, the compiler will now warn about the following +code: </p> <pre><code> Marek