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- Document `artificial-block.rs` - Move `artificial-block.rs` under `tests/ui/reachable`
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//! Check that we don't get compile errors on unreachable code after the `{ return 3; }` artificial | ||
//! block below. This test is run-pass to also exercise the codegen, but it might be possible to | ||
//! reduce to build-pass or even check-pass. | ||
//! | ||
//! This test was introduced as part of commit `a833f152baa17460e8414355e832d30d5161f8e8` which | ||
//! removes an "artificial block". See also commit `3d738e9e0634a4cd6239d1317bd7dad53be68dc8` for | ||
//! more elaboration, reproduced below (this is outdated for *today*'s rustc as of 2024-12-10, but | ||
//! is helpful to understand the original intention): | ||
//! | ||
//! > Return a fresh, unreachable context after ret, break, and cont | ||
//! > | ||
//! > This ensures we don't get compile errors on unreachable code (see | ||
//! > test/run-pass/artificial-block.rs for an example of sane code that wasn't compiling). In the | ||
//! > future, we might want to warn about non-trivial code appearing in an unreachable context, | ||
//! > and/or avoid generating unreachable code altogether (though I'm sure LLVM will weed it out as | ||
//! > well). | ||
//! | ||
//! Since then, `ret` became `return`, `int` became `isize` and `assert` became a macro. | ||
//@ run-pass | ||
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fn f() -> isize { | ||
{ | ||
return 3; | ||
} | ||
} | ||
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fn main() { | ||
assert_eq!(f(), 3); | ||
} |