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2a5dac7682
The contract_checks compiler flag is now used to determine if runtime contract checks should be enabled, as opposed to the compiler intrinsic as previously.
31 lines
878 B
Rust
31 lines
878 B
Rust
//@ revisions: unchk_pass chk_pass chk_fail_post
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//
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//@ [unchk_pass] run-pass
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//@ [chk_pass] run-pass
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//
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//@ [chk_fail_post] run-crash
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#![feature(contracts)] // to access core::contracts
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//~^ WARN the feature `contracts` is incomplete and may not be safe to use and/or cause compiler crashes [incomplete_features]
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#![feature(contracts_internals)] // to access check_requires lang item
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#![feature(core_intrinsics)]
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fn foo(x: Baz) -> i32 {
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let injected_checker = Some(core::contracts::build_check_ensures(|ret| *ret > 100));
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let ret = x.baz + 50;
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core::intrinsics::contract_check_ensures(injected_checker, ret)
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}
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struct Baz { baz: i32 }
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const BAZ_PASS_PRE_POST: Baz = Baz { baz: 100 };
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#[cfg(chk_fail_post)]
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const BAZ_FAIL_POST: Baz = Baz { baz: 10 };
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fn main() {
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assert_eq!(foo(BAZ_PASS_PRE_POST), 150);
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#[cfg(chk_fail_post)]
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foo(BAZ_FAIL_POST);
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}
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