# Function rustc_mir_transform::coverage::check_code_region

source ·

    fn check_code_region(code_region: CodeRegion) -> Option<CodeRegion>

Expand description

If `llvm-cov` sees a code region that is improperly ordered (end < start), it will immediately exit with a fatal error. To prevent that from happening, discard regions that are improperly ordered, or might be interpreted in a way that makes them improperly ordered.