The tracking issue for this feature is: #84605

The coverage attribute can be used to selectively disable coverage instrumentation in an annotated function. This might be useful to:

  • Avoid instrumentation overhead in a performance critical function
  • Avoid generating coverage for a function that is not meant to be executed, but still target 100% coverage for the rest of the program.



fn main() {
// `foo()` will get coverage instrumentation (by default)
fn foo() {
  // ...

fn bar() {
  // ...