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d90fd027c8
When MIR is built for an if-not expression, the `!` part of the condition doesn't correspond to any MIR statement, so coverage instrumentation normally can't see it. We can fix that by deliberately injecting a dummy statement whose sole purpose is to associate that span with its enclosing block.
39 lines
1.0 KiB
Plaintext
39 lines
1.0 KiB
Plaintext
LL| |#![feature(coverage_attribute)]
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LL| |// edition: 2021
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LL| |
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LL| 12|fn if_not(cond: bool) {
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LL| 12| if
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LL| 12| !
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LL| 12| cond
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LL| 4| {
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LL| 4| println!("cond was false");
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LL| 8| }
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LL| |
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LL| | if
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LL| 12| !
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LL| 12| cond
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LL| 4| {
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LL| 4| println!("cond was false");
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LL| 8| }
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LL| |
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LL| | if
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LL| 12| !
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LL| 12| cond
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LL| 4| {
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LL| 4| println!("cond was false");
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LL| 8| } else {
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LL| 8| println!("cond was true");
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LL| 8| }
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LL| 12|}
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LL| |
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LL| |#[coverage(off)]
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LL| |fn main() {
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LL| | for _ in 0..8 {
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LL| | if_not(std::hint::black_box(true));
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LL| | }
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LL| | for _ in 0..4 {
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LL| | if_not(std::hint::black_box(false));
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LL| | }
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LL| |}
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