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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - __attribute__((vector)) and templates"
href="http://llvm.org/bugs/show_bug.cgi?id=15730">15730</a>
</td>
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<tr>
<th>Summary</th>
<td>__attribute__((vector)) and templates
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>giulio.eulisse@cern.ch
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Hi,
the following bit of code:
template <int N, typename T> struct Foo
{
typedef T __attribute__((vector_size(N*sizeof(T)))) type;
};
compiles fine with gcc 4.7.2, however when compiled with clang 3.2 I get:
foo.cc:4:41: error: expected ')'
typedef T __attribute__((vector_size(N*sizeof(T)))) type;
^
)
foo.cc:4:41: error: expected ')'
typedef T __attribute__((vector_size(N*sizeof(T)))) type;
^
)
foo.cc:4:53: error: expected member name or ';' after declaration specifiers
typedef T __attribute__((vector_size(N*sizeof(T)))) type;
~~~~~~~~~ ^
Moreover even doing:
template <int N, typename T> struct Foo
{
typedef T __attribute__((vector_size(16))) type;
};
does not work and gives:
foo.cc:4:28: error: invalid vector element type 'T'
typedef T __attribute__((vector_size(16))) type;
^
The only way to get it to work is to eliminate the dependency on the T template
argument:
template <int N, typename T> struct Foo
{
typedef int __attribute__((vector_size(16))) type;
};
compiles fine on both clang 3.2 and gcc 4.7.2
Any idea?
Ciao,
Giulio</pre>
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