title: Vscode "Unable to open [file]: Unable to read file" message when clicking on an error
body: <p>I get this message when I click on a warning. This is a screenshot of the case.
  <a href="https://i.stack.imgur.com/BRwkz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BRwkz.png" alt="enter image description here"></a></p>
  
  <p>The error reads,</p>
  
  <blockquote>
    <p>Unable to open 'warning.cpp': Unable to read file
    '<code>/Users/dimen/code/C++/Users/dimen/code/C++/warning.cpp</code>'
    (Error: Unable to resolve non-existing file
    '<code>/Users/dimen/code/C++/Users/dimen/code/C++/warning.cpp</code>').</p>
  </blockquote>
  
  <p>My script is located in  <code>/Users/dimen/code/C++/warning.cpp</code> so vscode reiterates the path for some reason.</p>
  
  <p>I suspected that the linter setting must've been written erroneously but I'm not sure where I should edit. As some side notes,</p>
  
  <ul>
  <li>Using Microsoft's C/C++ extension. </li>
  <li><code>tasks.json</code> have been customized so that all the builds go inside the <code>build</code> folder</li>
  </ul>