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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.
29 lines
503 B
Rust
29 lines
503 B
Rust
#![allow(unused_assignments, unused_variables)]
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fn main() {
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// Initialize test constants in a way that cannot be determined at compile time, to ensure
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// rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
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// dependent conditions.
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let
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is_true
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=
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std::env::args().len()
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==
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1
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;
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let
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mut
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countdown
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=
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0
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;
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if
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is_true
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{
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countdown
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=
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10
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;
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}
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}
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