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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - __uuidof should introduce an identifier into the namespace"
href="http://llvm.org/bugs/show_bug.cgi?id=16850">16850</a>
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<th>Summary</th>
<td>__uuidof should introduce an identifier into the namespace
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>the following should compile but doesn't:
#include <stdio.h>
#include <typeinfo>
struct __declspec(uuid("12345678-1234-1234-1234-123456789abC")) uuid;
int main() {
&__uuidof(uuid);
printf("%s\n", typeid(_GUID_12345678_1234_1234_1234_123456789abc).name());
}
if it ran, it would print out:
__s_GUID
"struct __s_GUID" is a builtin type vended by the compiler and holds identical
fields as _GUID.
__uuidof(uuid) introduced a declaration that looks like:
extern "C" const __s_GUID _GUID_12345678_1234_1234_1234_123456789abc;
The expression "__uuidof(uuid)" evaluates to something akin to
"*reinterpret_cast<_GUID *>(&_GUID_12345678_1234_1234_1234_123456789abc)"</pre>
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