<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - ICE when assigning a function to a pointer."
   href="https://bugs.llvm.org/show_bug.cgi?id=49315">49315</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ICE when assigning a function to a pointer.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>OpenCL
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>anastasia.stulova@arm.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>anastasia.stulova@arm.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When the extension for the function pointers is used

#pragma OPENCL EXTENSION __cl_clang_function_pointers : enable
void foo();

void bar(){
 void (*f)() = foo;
}

frontend fails to compile it failing in the incorrect address space conversion
check.

diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index e03183c1a42f..8aece0b63037 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -15823,6 +15823,7 @@ bool Sema::DiagnoseAssignmentResult(AssignConvertType
ConvTy,

     isInvalid = true;

+    // FIXME: On function types we should not be taking a pointee.
     Qualifiers lhq = SrcType->getPointeeType().getQualifiers();
     Qualifiers rhq = DstType->getPointeeType().getQualifiers();
+    // FIXME: The right check should take the address space compatibility into
account.
     if (lhq.getAddressSpace() != rhq.getAddressSpace()) {

This issue is not triggered in C++ for OpenCL mode that seems to follow
different conversion path.</pre>
        </div>
      </p>


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