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RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.8/changes.html,v
retrieving revision 1.17
@@ -92,6 +92,21 @@
(re)allocation in hot loops. (For arrays, replacing <q><code>var=</code></q>
by <q><code>var(:)=</code></q> disables the automatic reallocation.)</li>
+ <li>The <a
+ href="http://gcc.gnu.org/onlinedocs/gfortran/Error-and-Warning-Options.html">
+ <code>-Wcompare-reals</code></a> flag has been added. When this flag is set,
+ warnings are issued when comparing <code>REAL</code> or
+ <code>COMPLEX</code> types for equality and inequality; consider replacing
+ <code>a == b</code> by <code>abs(a−b) < eps</code> with a suitable
+ <code>eps</code>. The -Wcompare-reals flag is enabled by
+ <code>-Wall</code>.</li>
+
+ <li>The <a
+ href="http://gcc.gnu.org/onlinedocs/gfortran/Error-and-Warning-Options.html">
+ <code>-Wtarget-lifetime</code></a> flag has been added (enabled with
+ <code>-Wall</code>), which warns if the pointer in a pointer assignment
+ might outlive its target.</li>
+
<li><p>Reading floating point numbers which use <q><code>q</code></q> for
the exponential (such as <code>4.0q0</code>) is now supported as vendor
extension for better compatibility with old data files. It is strongly