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<base href="https://bugs.llvm.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - vector bool type may not be compatible with vector unsigned type in generic selection in C"
href="https://bugs.llvm.org/show_bug.cgi?id=33342">33342</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>vector bool type may not be compatible with vector unsigned type in generic selection in C
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</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>westion717@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>void f(vector bool int);
void g(vector unsigned int);
#define example(X) \
_Generic((X), \
vector bool int : f((vector bool int)X), \
vector unsigned int : g((vector unsigned int)X))
int main(){
vector unsigned int a;
vector bool int b;
example(a);
example(b);
}
clang -c -o a.o a.c -fno-lax-vector-conversions
a.c:14:1: error: type '__vector unsigned int' (vector of 4 'unsigned int'
values) in generic association compatible with previously specified type
'__vector __bool unsigned int' (vector of 4 'unsigned int' values)
example(a);
^~~~~~~~~~
a.c:8:19: note: expanded from macro 'example'
vector unsigned int : g((vector unsigned int)X))
^~~
a.c:14:1: note: compatible type '__vector __bool unsigned int' (vector of 4
'unsigned int' values) specified here
example(a);
^~~~~~~~~~
a.c:7:15: note: expanded from macro 'example'
vector bool int : f((vector bool int)X), \
^~~
a.c:15:1: error: type '__vector unsigned int' (vector of 4 'unsigned int'
values) in generic association compatible with previously specified type
'__vector __bool unsigned int' (vector of 4 'unsigned int' values)
example(b);
^~~~~~~~~~
a.c:8:19: note: expanded from macro 'example'
vector unsigned int : g((vector unsigned int)X))
^~~
a.c:15:1: note: compatible type '__vector __bool unsigned int' (vector of 4
'unsigned int' values) specified here
example(b);
^~~~~~~~~~
a.c:7:15: note: expanded from macro 'example'
vector bool int : f((vector bool int)X), \
^~~
2 errors generated.</pre>
</div>
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