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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 --- - Giving struct with member as argument to __global__ function produces illegal memory access"
href="https://llvm.org/bugs/show_bug.cgi?id=27295">27295</a>
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<th>Summary</th>
<td>Giving struct with member as argument to __global__ function produces illegal memory access
</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>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>CUDA
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>crtrott@sandia.gov
</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>Created <span class=""><a href="attachment.cgi?id=16191" name="attach_16191" title="Reproducer">attachment 16191</a> <a href="attachment.cgi?id=16191&action=edit" title="Reproducer">[details]</a></span>
Reproducer
I am giving a struct with a pointer to int as member as an argument to a global
function. When using the pointer (which was set through a cudaMalloc call) I
get an illegal memory access error. The code works fine with NVCC. The basic
pattern is:
struct Bar {
int* ptr;
};
__global__
void foo(Bar b) {
b.ptr[0] = 1;
}
A reproducer is attached.</pre>
</div>
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