This icon appears by every line on every new file I create in VSCode. When I save the file, the icon disappears from every line, except the first:
This is not exclusive to C++, it happens with any file.
There's no tooltip when I hover over the icon, and nothing happens when I click it. What does it represent?
Someone reported the same "issue"; this icon seems to be contributed by the PostgreSQL extension.
Reference: https://github.com/microsoft/vscode/issues/237740