mirror of https://github.com/rust-lang/rust
33 lines
1.0 KiB
Rust
33 lines
1.0 KiB
Rust
//@ edition: 2021
|
|
//@ min-llvm-version: 18
|
|
//@ revisions: good bad
|
|
//@ check-pass
|
|
//@ compile-flags: -Cinstrument-coverage -Zcoverage-options=mcdc -Zno-profiler-runtime
|
|
|
|
// Check that we emit some kind of diagnostic when MC/DC instrumentation sees
|
|
// code that exceeds the limit of 6 conditions per decision, and falls back
|
|
// to only instrumenting that code for branch coverage.
|
|
//
|
|
// See also `tests/coverage/mcdc/condition-limit.rs`, which tests the actual
|
|
// effect on instrumentation.
|
|
//
|
|
// (The limit is enforced in `compiler/rustc_mir_build/src/build/coverageinfo/mcdc.rs`.)
|
|
|
|
#[cfg(good)]
|
|
fn main() {
|
|
// 6 conditions is OK, so no diagnostic.
|
|
let [a, b, c, d, e, f] = <[bool; 6]>::default();
|
|
if a && b && c && d && e && f {
|
|
core::hint::black_box("hello");
|
|
}
|
|
}
|
|
|
|
#[cfg(bad)]
|
|
fn main() {
|
|
// 7 conditions is too many, so issue a diagnostic.
|
|
let [a, b, c, d, e, f, g] = <[bool; 7]>::default();
|
|
if a && b && c && d && e && f && g { //[bad]~ WARNING number of conditions in decision
|
|
core::hint::black_box("hello");
|
|
}
|
|
}
|