[wwwdocs] gcc-8/changes.html additions

[Bernd Edlinger <bernd dot edlinger at hotmail dot de>]

Hi,

this adds a few gcc command line options to gcc-8/changes.html which
I added for gcc-8.

I have validated as XHTML 1.0 Transitional.

Is it OK for wwwdocs?



Thanks
Bernd.

? patch-changes.diff
Index: htdocs/gcc-8/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-8/changes.html,v
retrieving revision 1.51
diff -u -r1.51 changes.html
--- htdocs/gcc-8/changes.html	3 Apr 2018 06:52:04 -0000	1.51
+++ htdocs/gcc-8/changes.html	4 Apr 2018 18:10:12 -0000
@@ -177,6 +177,29 @@
 	as <code>if</code>, <code>else</code>, <code>while</code>,
 	<code>switch</code>, or <code>for</code>.</li>
       </ul>
+      <ul>
+	<li><code>-Wcast-function-type</code> warns when a function pointer
+	is cast to an incompatible function pointer.  This warning is enabled
+	by <code>-Wextra</code>.</li>
+      </ul>
+      <ul>
+	<li><code>-Wsizeof-pointer-div</code> warns for suspicious divisions
+	of two sizeof expressions that divide the pointer size by the element
+	size, which is the usual way to compute the array size but won't work
+	out correctly with pointers.
+	This warning is enabled by <code>-Wall</code>.</li>
+      </ul>
+      <ul>
+	<li><code>-Wcast-align=strict</code> warns whenever a pointer is cast
+	such that the required alignment of the target is increased.  For
+	example, warn if a <code>char *</code> is cast to an <code>int *</code>
+	regardless of the target machine.</li>
+      </ul>
+      <ul>
+	<li><code>-fprofile-abs-path</code> create absolute path names in the
+	<code>.gcno</code> files.  This allows <code>gcov</code> to find the correct
+	sources in projects where compilations occur with different working directories.</li>
+      </ul>
     </li>
     <li><code>-fno-strict-overflow</code> is now mapped to
      <code>-fwrapv -fwrapv-pointer</code> and signed integer overflow