Vscode-cpptools: IntelliSense does not find symbols in current namespace

[crayzeewulf]

Type: LanguageService

This appears to be related to issue #1029 but the example below is much simpler.

Describe the bug

• OS and Version: Ubuntu 18.04.2 LTS
• VS Code Version: 1.34.0
• C/C++ Extension Version: 0.23.1
• Other extensions you installed (and if the issue persists after disabling them): None
• If there is a symbol, say BarError, inside a namespace, say Foo, in a header and one is editing a .cpp file, IntelliSense is unable to find this symbol BarError while cursor is inside namespace Foo { } block.

To Reproduce

1. Create a file tmp.h with the following lines:

#pragma once

namespace Foo
{
    class BarError {} ;
}

1. Create a file named tmp.cpp in the same folder with the following lines:

#include "tmp.h"

namespace Foo
{
    void vscode_bug()
    try {

    } catch(const /* place cursor after const<space> and type Bar */)
    }
}

1. Place cursor after the const on the line with catch-statement and type Bar. One would expect IntelliSense to provide BarError as a completion option. But this is not the case. This is what we get:

1. On the other hand, if one types Foo::, the completion does show up. This is shown in the figure below:

The completion does show up correctly in both cases when using a language server with NeoVim as shown in the figures below:

Expected behavior

As described above, symbol BarError should appear in completion list inside namespace Foo {} block but does not appear unless explicitly qualified using Foo::.

Screenshots

Screenshots included inline in the description above.

Additional context

This bug was reproduced with default configuration of VS Code and C++ tools. No customization was performed.

[sean-mcmanus]

I've filed a bug on Visual Studio 2019 (the source of the bug) at https://developercommunity.visualstudio.com/content/problem/588356/c-intellisense-autocomplete-fails-to-locate-namesp.html . If you have a Microsoft account you can login to upvote that issue.

One potential workaround is to surround the method with {} instead having the try/catch around the body.

[crayzeewulf]

I've filed a bug on Visual Studio 2019 (the source of the bug) at https://developercommunity.visualstudio.com/content/problem/588356/c-intellisense-autocomplete-fails-to-locate-namesp.html .

Thanks.

One potential workaround is to surround the method with {} instead having the try/catch around the body.

Another workaround that does not require one to change the C++ code is to use vscode-clangd extension. It produces the correct expected completions.

[vctrro]

I am observing the same bug in vsc1.41.1+ms-vscode.csharp.