core dumped if a breakpoint was set

[HarveyHub]

• VSCode Version:1.45.1
• OS Version: Ubuntu 16.04 linux core:4.15.0

Steps to Reproduce:

1. press F5 to debug the executable
2. it will core dump if you set a break point on cpp fille

Does this issue occur when all extensions are disabled?: Yes/No

[egamma]

Please report the issue against the C++ extension.