[0.24-insiders][macos] Dummy error in output after opening file with Cmd+click

[vng]

Type: LanguageService
Always getting this error when opening file with Cmd+click:

This file (blabla) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.

Describe the bug

• OS and Version: MacOS latest
• VS Code Version: 1.35.1
• C/C++ Extension Version: 0.24-insiders
• Other extensions you installed (and if the issue persists after disabling them): CMake, Python, Rust

To Reproduce

{
    "configurations": [
        {
            "name": "Mac",
            "includePath": [
                "${workspaceFolder}/**",
                "/usr/local/opt/tbb/include/",
                "/usr/local/opt/boost/include/"
            ],
            "defines": [],
            "macFrameworkPath": [],
            "cStandard": "c11",
            "cppStandard": "c++17",
            "intelliSenseMode": "clang-x64",
            "configurationProvider": "vector-of-bool.cmake-tools",
            "compileCommands": "${workspaceFolder}/build/compile_commands.json"
        }
    ],
    "version": 4
}

Just open any file with Cmd+click on any symbol ...

Expected behavior
Don't show any errors ..

[52coder]

Got this problem too with 10.14.5 (18F132) with newest vscode and 0.24.0-insiders ,full warning message:

This file (/Users/coder52/Downloads/vscode/mycode/handle_message.h) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.

Also I got a problem with terminal suddenly appear with some json error.

[52coder]

cpptools sometimes will produce some error with this problem,maybe it's a same problem，I tried just open one vscode,still got the same error message.

[Error - 12:14:08 AM] Connection to server got closed. Server will not be restarted.
[Error - 12:14:08 AM] Request textDocument/hover failed.
Error: Connection got disposed.
at Object.dispose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:2556:25)
at Object.dispose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:3313:35)
at LanguageClient.handleConnectionClosed (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:5395:42)
at LanguageClient.handleConnectionClosed (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:11804:15)
at closeHandler (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:5382:18)
at CallbackList.invoke (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7515:39)
at Emitter.fire (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7573:36)
at closeHandler (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:1906:26)
at CallbackList.invoke (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7515:39)
at Emitter.fire (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7573:36)
at StreamMessageReader.fireClose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:9855:27)
at Socket.module.exports.listen.readable.on (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:9895:46)
at Socket.emit (events.js:187:15)
at Pipe.Socket._destroy._handle.close [as _onclose] (net.js:596:12)
[Error - 12:14:08 AM] Request textDocument/documentHighlight failed.
Error: Connection got disposed.
at Object.dispose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:2556:25)
at Object.dispose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:3313:35)
at LanguageClient.handleConnectionClosed (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:5395:42)
at LanguageClient.handleConnectionClosed (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:11804:15)
at closeHandler (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:5382:18)
at CallbackList.invoke (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7515:39)
at Emitter.fire (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7573:36)
at closeHandler (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:1906:26)
at CallbackList.invoke (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7515:39)
at Emitter.fire (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:7573:36)
at StreamMessageReader.fireClose (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:9855:27)
at Socket.module.exports.listen.readable.on (/Users/coder52/.vscode/extensions/ms-vscode.cpptools-0.24.0-insiders/dist/main.js:9895:46)
at Socket.emit (events.js:187:15)
at Pipe.Socket._destroy._handle.close [as _onclose] (net.js:596:12)

[zrno]

same problem on windows 10.

[sean-mcmanus]

That "different casing" code is only supposed to run on Windows. @andreeis Are you able to investigate this?

[sean-mcmanus]

@zrno What problem are you seeing on Windows? If you're just getting crashes that is being tracked by #3792 . Do you folders have case sensitivity enabled? Is there something special about the URIs/filenames that are being opened that might cause our code to incorrect think it's a duplicate?

[sean-mcmanus]

@andreeis Do you have enough info to fix this? I don't know how to repro it. I guess we could just disable all these code paths on Linux/Mac, even if we don't understand why it's failing.

Does anyone know what is special about the URIs that causes this issue to occur? Our code thinks a duplicate file is being opened. Are there symlinks on the path?

[ducalex]

I'm getting the same problem on windows 8.1 and cpptools 0.24.0-insiders. No two files of the same name exist in the project. No symlink. No network drive. Single VS Code instance open. The files in the log were not previously opened. It was working fine in previous cpptools.

Log after opening a few dozen random files in the project (most didn't trigger the error):

This file (c:\Users\alex\Documents\ESP32\go-lynx\components\lynx\system.h) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.
This file (c:\Users\alex\Documents\ESP32\go-lynx\components\lynx\system.cpp) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.
Failed to create IntelliSense client. Can't create intellisense client for C:\USERS\ALEX\DOCUMENTS\ESP32\GO-LYNX\COMPONENTS\LYNX\SYSTEM.H
This file (c:\Users\alex\Documents\ESP32\go-lynx\components\odroid-go\spi_lcd.c) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.
This file (c:\Users\alex\Documents\ESP32\go-lynx\components\lynx\ram.h) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.
This file (c:\Users\alex\Documents\ESP32\go-lynx\components\lynx\ram.cpp) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.
This file (c:\Users\alex\Documents\ESP32\go-lynx\components\lynx\memmap.cpp) is already opened in the editor but with a different casing. IntelliSense features will be disabled on this copy of the file.