Exception thrown during the configure process if CppTools's IntelliSense engine is disabled

[KRMisha]

If the ms-vscode.cpptools extension's IntelliSense engine is disabled (by adding "C_Cpp.intelliSenseEngine": "disabled" to settings.json), the VS Code Makefile Tools extension throws an exception during its configure process. This message shows up in the output panel:

Exception thrown during the configure process: Cannot read properties of undefined (reading 'ActiveClient')

Setting "C_Cpp.intelliSenseEngine": "disabled" is useful when using another extension for language support, notably vscode-clangd, while still retaining CppTools's other useful features such as debugging.

Here is the thrown extension's stack trace:

TypeError: Cannot read properties of undefined (reading 'ActiveClient')
	at Object.getActiveClient (/home/misha/.vscode/extensions/ms-vscode.cpptools-1.18.5-linux-x64/dist/src/main.js:55922:28)
	at CustomConfigurationProviderCollection.add (/home/misha/.vscode/extensions/ms-vscode.cpptools-1.18.5-linux-x64/dist/src/main.js:54821:44)
	at CppTools.registerCustomConfigurationProvider (/home/misha/.vscode/extensions/ms-vscode.cpptools-1.18.5-linux-x64/dist/src/main.js:62426:23)
	at MakefileToolsExtension.registerCppTools (<path-to-repo>/vscode-makefile-tools/out/src/extension.js:105:30)
	at async MakefileToolsExtension.registerCppToolsProvider (<path-to-repo>/vscode-makefile-tools/out/src/extension.js:66:9)
	at async <path-to-repo>/vscode-makefile-tools/out/src/make.js:1254:48
	at async Immediate.<anonymous> (<path-to-repo>/vscode-makefile-tools/out/src/util.js:845:32)

[gcampbell-msft]

@KRMisha Thanks for letting us know! This seems like something that we should ensure doesn't break our configure process. Marking this as a bug and putting it in our backlog, thanks!

[gcampbell-msft]

@sean-mcmanus Does this belong on the cpp-tools extension? It seems like it's an exception getting thrown inside of the cpptools registerCustomConfigurationProvider method. Thanks!

[sean-mcmanus]

@KRMisha Fixed with https://github.com/microsoft/vscode-cpptools/releases/tag/v1.19.2

[KRMisha]

Thanks a lot!