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e1d4f2a0c2
And introduce two new directives for ui tests: * `run-crash` * `run-fail-or-crash` Normally a `run-fail` ui test like tests that panic shall not be terminated by a signal like `SIGABRT`. So begin having that as a hard requirement. Some of our current tests do terminate by a signal/crash however. Introduce and use `run-crash` for those tests. Note that Windows crashes are not handled by signals but by certain high bits set on the process exit code. Example exit code for crash on Windows: `0xc000001d`. Because of this, we define "crash" on all platforms as "not exit with success and not exit with a regular failure code in the range 1..=127". Some tests behave differently on different targets: * Targets without unwind support will abort (crash) instead of exit with failure code 101 after panicking. As a special case, allow crashes for `run-fail` tests for such targets. * Different sanitizer implementations handle detected memory problems differently. Some abort (crash) the process while others exit with failure code 1. Introduce and use `run-fail-or-crash` for such tests.
57 lines
1.6 KiB
Rust
57 lines
1.6 KiB
Rust
//! Check if we can annotate a constant function with contracts.
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//!
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//! The contract is only checked at runtime, and it will not fail if evaluated statically.
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//! This is an existing limitation due to the existing architecture and the lack of constant
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//! closures.
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//!
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//@ revisions: all_pass runtime_fail_pre runtime_fail_post
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//
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//@ [all_pass] run-pass
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//
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//@ [runtime_fail_pre] run-crash
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//@ [runtime_fail_post] run-crash
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//
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//@ [all_pass] compile-flags: -Zcontract-checks=yes
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//@ [runtime_fail_pre] compile-flags: -Zcontract-checks=yes
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//@ [runtime_fail_post] compile-flags: -Zcontract-checks=yes
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#![feature(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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extern crate core;
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use core::contracts::*;
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#[requires(x < 100)]
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const fn less_than_100(x: u8) -> u8 {
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x
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}
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// This is wrong on purpose.
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#[ensures(|ret| *ret)]
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const fn always_true(b: bool) -> bool {
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b
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}
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const ZERO: u8 = less_than_100(0);
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// This is no-op because the contract cannot be checked at compilation time.
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const TWO_HUNDRED: u8 = less_than_100(200);
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/// Example from <https://github.com/rust-lang/rust/issues/136925>.
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#[ensures(move |ret: &u32| *ret > x)]
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const fn broken_sum(x: u32, y: u32) -> u32 {
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x + y
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}
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fn main() {
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assert_eq!(ZERO, 0);
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assert_eq!(TWO_HUNDRED, 200);
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assert_eq!(broken_sum(0, 1), 1);
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assert_eq!(always_true(true), true);
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#[cfg(runtime_fail_post)]
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let _ok = always_true(false);
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// Runtime check should fail.
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#[cfg(runtime_fail_pre)]
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let _200 = less_than_100(200);
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}
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