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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - error: conflicting types for '_m_prefetchw'"
href="https://bugs.llvm.org/show_bug.cgi?id=49124">49124</a>
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<th>Summary</th>
<td>error: conflicting types for '_m_prefetchw'
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>11.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>vturbanov@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>There is a declaration collision, when trying to compile with Clang under
Windows.
_m_prefetchw is declared in prfchwintrin.h as:
<span class="quote">> static __inline__ void __attribute__((__always_inline__, __nodebug__))</span >
_m_prefetchw(void *__P)
While there is a colliding declaration in Windows SDK's header winnt.h:
<span class="quote">>VOID
>_m_prefetchw (
> _In_ volatile CONST VOID *Source
> );</span >
As an example, because of this collision the SDL library is failing to compile
with Clang on Windows 10. I'm currently developing some hacking method to
overcome this, but I a solution from Clang itself could actually be more
appropriate and stable.</pre>
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