mirror of https://github.com/rust-lang/rust
28 lines
642 B
Rust
28 lines
642 B
Rust
//@ run-pass
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//@ compile-flags: -C debug_assertions=true
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//@ needs-unwind
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//@ ignore-emscripten dies with an LLVM error
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use std::panic;
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fn main() {
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macro_rules! overflow_test {
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($t:ident) => (
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let r = panic::catch_unwind(|| {
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($t::MAX).next_power_of_two()
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});
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assert!(r.is_err());
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let r = panic::catch_unwind(|| {
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(($t::MAX >> 1) + 2).next_power_of_two()
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});
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assert!(r.is_err());
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)
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}
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overflow_test!(u8);
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overflow_test!(u16);
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overflow_test!(u32);
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overflow_test!(u64);
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overflow_test!(u128);
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}
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