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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang on 64-bit Windows defaults to trying to generate 32-bit code"
href="http://llvm.org/bugs/show_bug.cgi?id=22424">22424</a>
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<th>Summary</th>
<td>Clang on 64-bit Windows defaults to trying to generate 32-bit code
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>3.5
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>russell.wallace@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>When you build Clang on 64-bit Windows using the 64-bit Microsoft C++ compiler,
the resulting version of Clang still defaults to generating 32-bit code,
leading to nonobvious link time error messages on a test compile of hello.c as
described in:
<a href="http://stackoverflow.com/questions/18452967/clang-microsoft-linker-and-standard-library">http://stackoverflow.com/questions/18452967/clang-microsoft-linker-and-standard-library</a>
This can be worked around by supplying Clang with the -m64 command line option,
but the need for this isn't clear from the error message.
The preferred solution would be for the compiler to default to generating
64-bit code when on a 64-bit system or built with 64-bit Microsoft C++.</pre>
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