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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Unusual attribute behavior when specifying __declspec(noreturn) attribute"
href="https://llvm.org/bugs/show_bug.cgi?id=28578">28578</a>
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<th>Summary</th>
<td>Unusual attribute behavior when specifying __declspec(noreturn) attribute
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Driver
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>keyboardsmoke@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>When I'm printing a function from AST data, the following function:
__forceinline __declspec(noalias, deprecated("GO AWAY"), dllexport, nothrow,
noinline) void bodyFunction() {
printf("Hello, world!\n");
}
will result in the following:
inline void bodyFunction() __declspec(noinline) __declspec(nothrow)
__declspec(dllexport) __declspec(deprecated("GO AWAY")) __declspec(noalias)
__forceinline {
printf("Hello, world!\n");
}
Ignoring the incorrect visual studio formatting, this is "correct"
However, when you add "noreturn" to the declspec, it inserts duplicates of
declared attributes.
So this function:
__forceinline __declspec(noalias, deprecated("GO AWAY"), dllexport, nothrow,
noinline, noreturn) void bodyFunction() {
printf("Hello, world!\n");
}
Now results in this:
inline void bodyFunction() __declspec(noinline) __declspec(nothrow)
__declspec(dllexport) __declspec(deprecated("GO AWAY")) __declspec(noalias)
__forceinline __declspec(noinline) __declspec(nothrow)
__declspec(deprecated("GO AWAY")) __declspec(noalias) {
printf("Hello, world!\n");
}
I am unsure if noreturn is the cause of this, specifically, but it seems to be
duplicating existing attributes (or inserting them multiple times), when I
iterate the attributes the duplicates do indeed exist, so it isn't a printing
issue.</pre>
</div>
</p>
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