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 more elaboration, reproduced below (this is outdated for *today*'s rustc as of 2024-12-10, but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