Type: LanguageService

Describe the bug

• OS and Version: win 7 sp1
• VS Code Version:1.43.0
• C/C++ Extension Version:0.27.0-insiders2
• Other extensions you installed (and if the issue persists after disabling them): No
• Does this issue involve using SSH remote to run the extension on a remote machine?: No

I'm working on a computer that does not have access to the Internet. I install the extension by "Install from VSIX..."
I have the following problems:

• The OUTLINE views show: No symbols found in document 'main.cpp'
• ctrl+shift+o : No symbols found
• "Find all reference": only found local variable, show "No results" when I search function or global variable

Screenshots
log infomation：Tag parsing eccountered a error， but it may not matter. Let us
know if symbols in the file cant be found:
The picture link :https://github.com/gujinfei/res/blob/master/IMG_4339.JPG