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PO-Wall without -Wreturn-type
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copied!<p>According to the GCC manual, the <code>-Wreturn-type</code> options is enabled with <code>-Wall</code>. However, I can't find a proper way to disable it while keeping the rest of <code>-Wall</code> enabled.</p> <p>Consider this code:</p> <pre><code>func() {} </code></pre> <p>If compiled without warnings, no output is produced. Now, if I turn on <code>-Wall</code> the following lines will appear:</p> <pre class="lang-none prettyprint-override"><code>$ gcc fn.c -Wall fn.c:1: warning: return type defaults to ‘int’ fn.c: In function ‘func’: fn.c:1: warning: control reaches end of non-void function </code></pre> <p>Ok, all nice. Now, if compiled with <code>-Wreturn-type</code>, the same output is produced:</p> <pre class="lang-none prettyprint-override"><code>$ gcc fn.c -Wreturn-type fn.c:1: warning: return type defaults to ‘int’ fn.c: In function ‘func’: fn.c:1: warning: control reaches end of non-void function </code></pre> <p>So, I conclude that <code>-Wreturn-type</code> is responsible for those warnings. But maybe it's not, or I'm doing something worse, as this was expected to produce no output:</p> <pre class="lang-none prettyprint-override"><code>$ gcc fn.c -Wall -Wno-return-type fn.c:1: warning: return type defaults to ‘int’ </code></pre> <p>Is it possible to use <code>-Wall</code> but disable <code>-Wreturn-type</code> completely? Or maybe I'm missing another available option?</p> <p>If it matters, I'm on Mac OS 10.7 (Darwin 11) with GCC 4.2.1 (strangely enough, compiled with LLVM :P)</p>

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