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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - casts from pointer to integer of different size or vice versa on 64 bit Windows (MinGW64 and MSVC)"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81329">81329</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
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<th>Summary</th>
<td>casts from pointer to integer of different size or vice versa on 64 bit Windows (MinGW64 and MSVC)
</td>
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<th>QA Contact</th>
<td>cairo-bugs@cairographics.org
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<th>Severity</th>
<td>normal
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Windows (All)
</td>
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<th>Reporter</th>
<td>peb@mppmu.mpg.de
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>1.12.16
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<th>Component</th>
<td>general
</td>
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<th>Product</th>
<td>cairo
</td>
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<p>
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<pre>There are several instance where a pointer is cast to 'unsigned long' or vice
versa, e.g., in cairo-mempool.c and cairo-scaled-font.c. On 64 bit Windows a
pointer has 8 bytes whereas long has only 4 bytes. This certainly causes
compiler warnings and also might introduce bugs.
Ideally one should use uintptr_t instead of 'unsigned long' but that may not be
present everywhere. An alternative is to use 'unsigned __int64' if and only if
_WIN64 is defined.</pre>
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