<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/62173>62173</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang++ miscompiles the code if return statement is missing: comparison and a conditional jump are not emitted to ASM
        </td>
    </tr>

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

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

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

<pre>
    Please, see the reproducer here: https://github.com/srogatch/no_comparison/tree/clang
The same bug is present in g++ - see the `master` branch.
```
clang++ --version
clang version 10.0.0-4ubuntu1 
Target: x86_64-pc-linux-gnu
Thread model: posix
```
clang++ miscompiles the given source file, so that the comparison and conditional jump instructions are not emitted in the assembly (see the assembly file I generate). Probably adding `return 0;` or compiling in Debug fixes the problem.

</pre>
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