<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/114572>114572</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libc] wrong header guard on libc/src/__support/big_int.h
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            good first issue,
            libc
      </td>
    </tr>

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

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

<pre>
    libc/src/__support/big_int.h has the header guards:
```c
#ifndef LLVM_LIBC_SRC___SUPPORT_UINT_H
#define LLVM_LIBC_SRC___SUPPORT_UINT_H
...
#endif // LLVM_LIBC_SRC___SUPPORT_UINT_H
```

These 3 should be changed to `LLVM_LIBC_SRC___SUPPORT_BIG_INT_H`.
</pre>
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