25 lines
566 B
Rust
25 lines
566 B
Rust
#![allow(incomplete_features, dead_code)]
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#![deny(unconditional_recursion)] //~ note: the lint level is defined here
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#![feature(explicit_tail_calls)]
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fn f(x: bool) {
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//~^ error: function cannot return without recursing
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//~| note: cannot return without recursing
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if x {
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become f(!x)
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} else {
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f(!x) //~ note: recursive call site
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}
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}
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// This should *not* lint, tail-recursive functions which never return is a reasonable thing
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fn g(x: bool) {
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if x {
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become g(!x)
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} else {
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become g(!x)
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}
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}
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fn main() {}
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