llvm-project

3911c6a2 - [clang] Allow enabling sandbox for direct `-cc1` invocations (#174653)

[clang] Allow enabling sandbox for direct `-cc1` invocations (#174653) This PR enables the FS sandbox for direct `clang -cc1` invocations. https://github.com/llvm/llvm-project/pull/165350 unintentionally implemented the sandbox only for the code path where `clang -cc1` gets invoked after being expanded from a driver command line, which reduced the expected test coverage.