<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/54159>54159</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Assertion `!Info.isIncomplete() && "Access to an object of an incomplete type!"' failed
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          pmor13
      </td>
    </tr>
</table>

<pre>
    ```
extern void x;
void f(void)
{
    (void)x;
}

$ clang t0.c -O1 -std=c11 -pedantic -Wall -Wextra
clang: /root/llvm-project/clang/lib/CodeGen/CodeGenTBAA.cpp:397: llvm::MDNode* clang::CodeGen::CodeGenTBAA::getAccessTagInfo(clang::CodeGen::TBAAAccessInfo): Assertion `!Info.isIncomplete() && "Access to an object of an incomplete type!"' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
```
https://godbolt.org/z/G6sxeeG5d
</pre>
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