| //@ revisions: unchk_pass chk_pass chk_fail_post |
| // |
| //@ [unchk_pass] run-pass |
| //@ [chk_pass] run-pass |
| // |
| //@ [chk_fail_post] run-crash |
| |
| #![feature(contracts)] // to access core::contracts |
| //~^ WARN the feature `contracts` is incomplete and may not be safe to use and/or cause compiler crashes [incomplete_features] |
| #![feature(contracts_internals)] // to access check_requires lang item |
| #![feature(core_intrinsics)] |
| fn foo(x: Baz) -> i32 { |
| let injected_checker = Some(core::contracts::build_check_ensures(|ret| *ret > 100)); |
| |
| let ret = x.baz + 50; |
| core::intrinsics::contract_check_ensures(injected_checker, ret) |
| } |
| |
| struct Baz { baz: i32 } |
| |
| |
| const BAZ_PASS_PRE_POST: Baz = Baz { baz: 100 }; |
| #[cfg(chk_fail_post)] |
| const BAZ_FAIL_POST: Baz = Baz { baz: 10 }; |
| |
| fn main() { |
| assert_eq!(foo(BAZ_PASS_PRE_POST), 150); |
| #[cfg(chk_fail_post)] |
| foo(BAZ_FAIL_POST); |
| } |
