3141177995
The output of these tests is too complicated to comfortably verify by hand, but we can still use them to observe changes to the underlying mappings produced by codegen/LLVM. If these tests fail due to non-coverage changes (e.g. in HIR-to-MIR lowering or MIR optimizations), it should usually be OK to just `--bless` them, as long as the `run-coverage` test suite still works.
31 lines
643 B
Rust
31 lines
643 B
Rust
#![allow(dead_code, unreachable_code)]
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// Regression test for #93054: Functions using uninhabited types often only have a single,
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// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
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// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.
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// compile-flags: --edition=2021
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enum Never {}
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impl Never {
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fn foo(self) {
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match self {}
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make().map(|never| match never {});
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}
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fn bar(&self) {
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match *self {}
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}
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}
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async fn foo2(never: Never) {
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match never {}
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}
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fn make() -> Option<Never> {
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None
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}
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fn main() {}
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