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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - OpenCL incorrectly accepts implicit address space conversion with ternary operator"
href="http://llvm.org/bugs/show_bug.cgi?id=19957">19957</a>
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<th>Summary</th>
<td>OpenCL incorrectly accepts implicit address space conversion with ternary operator
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Frontend
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>Matthew.Arsenault@amd.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=12616" name="attach_12616" title="Testcase">attachment 12616</a> <a href="attachment.cgi?id=12616&action=edit" title="Testcase">[details]</a></span>
Testcase
When there is an implicit address space conversion in a ternary operator, in
some cases it is incorrectly accepted. It produces a warning about mismatched
pointer types in some cases, but is the correct error about changing the
address space of the pointer in others.
An example of the broken case is:
kernel void implicit_cast_private(global int* gint, local int* lint, int cond)
{
int *ptr = cond ? gint : lint;
}
Which is merely a warning: pointer type mismatch ('__global int *' and '__local
int *')
A similar case which correctly errors:
kernel void implicit_cast_local(global int* gint, local int* lint, int cond)
{
local int *ptr = cond ? gint : lint;
}
error: initializing '__local int *' with an expression of type 'void *' changes
address space of pointer</pre>
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