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<div>Apple clang version 3.0 (tags/Apple/clang-211.9) (based on LLVM 3.0svn)</div>
<div>Target: x86_64-apple-darwin10.8.0</div>
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<div style="font-family: Arial, sans-serif; font-size: 13px; ">It's part of the Xcode 4.2b7 package.</div>
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<div style="font-family: Arial, sans-serif; font-size: 13px; ">Shall I try to compile it on my own?</div>
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<div style="font-family: Arial, sans-serif; font-size: 13px; ">Thanks, Akos</div>
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<span style="font-weight:bold">From: </span>John McCall <<a href="mailto:rjmccall@apple.com">rjmccall@apple.com</a>><br>
<span style="font-weight:bold">Date: </span>Mon, 3 Oct 2011 10:19:04 -0700<br>
<span style="font-weight:bold">To: </span>Ákos Somorjai <<a href="mailto:asomorjai@graphisoft.com">asomorjai@graphisoft.com</a>><br>
<span style="font-weight:bold">Cc: </span>"<a href="mailto:llvmdev@cs.uiuc.edu">llvmdev@cs.uiuc.edu</a>" <<a href="mailto:llvmdev@cs.uiuc.edu">llvmdev@cs.uiuc.edu</a>><br>
<span style="font-weight:bold">Subject: </span>Re: [LLVMdev] RTTI handling<br>
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<div>On Oct 3, 2011, at 4:42 AM, Somorjai, Akos wrote:</div>
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<div>I'm trying to use this warning to check the vtable problem. Here's an example</div>
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<div>In mem.hpp </div>
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<span style="color: #bb2d9d">class</span><span class="Apple-tab-span" style="white-space:pre"></span>AA {</div>
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<span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"></span></span>// Construction / destruction:</div>
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protected<span style="color: #000000">:</span></div>
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<span class="Apple-tab-span" style="white-space:pre"></span>AA ();</div>
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<span style="color: #000000"><span class="Apple-tab-span" style="white-space:pre"></span>AA (</span><span style="color: #bb2d9d">const</span><span style="color: #000000"></span><span style="color: #4e8186">AA</span><span style="color: #000000">&);
</span>// Disabled</div>
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public<span style="color: #000000">:</span></div>
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<span class="Apple-tab-span" style="white-space:pre"></span><span style="color: #bb2d9d">virtual</span> ~AA ();</div>
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};</div>
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<div>In mem.cpp</div>
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#include <span style="color: #d12c26">"mem.hpp"</span></div>
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<span style="color: #4e8186">AA</span>::~AA()</div>
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{</div>
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}</div>
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<div>And I still get the following warning:</div>
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<div><span class="Apple-tab-span" style="white-space:pre"></span>warning: 'AA' has no out-of-line virtual method definitions; its vtable will be emitted in every translation unit [-Wweak-vtables,3]</div>
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Which version of Clang are you using? Like I said, this warning was still experimental even a few months ago, and it's gotten a lot of attention on ToT. In particular, this case no longer warns.</div>
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<div>John.</div>
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