<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/139837>139837</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Can't find C++ standard library
        </td>
    </tr>

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

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

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

<pre>
    ## everytime I try to compile C++ with clang, I get this

```bash
$ clang++-18 alloc.cpp
alloc.cpp:1:10: fatal error: 'iostream' file not found
    1 | #include <iostream>
      | ^~~~~~~~~~
1 error generated.
```
**why can't it open C++ headers itself?**
I have to give header path myself
</pre>
<img width="1" height="1" alt="" src="http://email.email.llvm.org/o/eJxMUsGO4yAM_RrnYk1FIJTmkEPanUqzf0HASViREAHpqJf99hVtZ2aREVi8Z56frFNy00rUgTyD_FXpPc8hduf5t3ab9tUQ7L0DLoALpBvFe3YL4QfmeMcc0IRlc57wAvwM_IyfLs9ovF4n4Bf8wIky5tklYH2JI3vGoNNcct58gQv7rT6h9j6Yg9k2YP3PXfR12QxEj6PO2iPFGGJJgSsXUo6kF-AKx6JmDRnHsK8WWI-IWCOoCwIXbjV-t4QgLt8k8f5C4RMl3_9-LWB9_fwJJ1op6kz28H8fjx5KfM53NHoFrjK6jGGj9duTmbSlmNDlRH4EcX1SgPUfOOsbFR8nd6MXEDedZ1zuBVzZTthWtLqirlaNqtujaGU1d-rYjsLqerRKKmYMN9QQU9ZoKeSRbOU6zrhksm5YU7dSHpQ5nU5SDaNU3LaNhobRop0_eH9bDiFOlUtpp64W7UmoyuuBfHpMBecrfeLjFTgvQxK7Qnob9ilBw7xLOf2UyS576i4vM0a32m8nUtar1dGid0PU8V7t0XdzzlsC0QO_Ar9OLs_7cDBhAX4tNV_H2xbDHzIZ-PWhJAG_vqTeOv4vAAD__3gG2V8">