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      <base href="https://llvm.org/bugs/" />
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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 --- - 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>
          </td>
        </tr>

        <tr>
          <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>

        <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>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>

        <tr>
          <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>
      </p>
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