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LL| |#![feature(coverage_attribute)]
LL| |//@ edition: 2021
LL| |//@ compile-flags: -Zcoverage-options=branch
LL| |//@ llvm-cov-flags: --show-branches=count
LL| |
LL| |macro_rules! no_merge {
LL| | () => {
LL| | for _ in 0..1 {}
LL| | };
LL| |}
LL| |
LL| 3|fn let_else(value: Option<&str>) {
LL| 3| no_merge!();
LL| |
LL| 3| let Some(x) = value else {
^2
------------------
| Branch (LL:9): [True: 2, False: 1]
------------------
LL| 1| say("none");
LL| 1| return;
LL| | };
LL| |
LL| 2| say(x);
LL| 3|}
LL| |
LL| |#[coverage(off)]
LL| |fn say(message: &str) {
LL| | core::hint::black_box(message);
LL| |}
LL| |
LL| |#[coverage(off)]
LL| |fn main() {
LL| | let_else(Some("x"));
LL| | let_else(Some("x"));
LL| | let_else(None);
LL| |}
LL| |
LL| |// FIXME(#124118) Actually instrument let-else for branch coverage.
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