mirror of https://github.com/rust-lang/rust
24 lines
815 B
Rust
24 lines
815 B
Rust
//! This test tests two things at once:
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//! 1. we error if a const evaluation hits the deny-by-default lint limit
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//! 2. we do not ICE on invalid follow-up code
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//! 3. no ICE when run with `-Z unstable-options` (issue 122177)
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//@revisions: eval_limit no_ice
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//@[no_ice] compile-flags: -Z tiny-const-eval-limit -Z unstable-options
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//@[eval_limit] compile-flags: -Z tiny-const-eval-limit
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fn main() {
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// Tests the Collatz conjecture with an incorrect base case (0 instead of 1).
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// The value of `n` will loop indefinitely (4 - 2 - 1 - 4).
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let s = [(); {
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let mut n = 113383; // #20 in https://oeis.org/A006884
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while n != 0 {
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//~^ ERROR is taking a long time
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n = if n % 2 == 0 { n / 2 } else { 3 * n + 1 };
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}
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n
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}];
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s.nonexistent_method();
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}
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