rust/tests/ui/lint/reasons-forbidden.rs
2024-02-16 20:02:50 +00:00

35 lines
1.1 KiB
Rust

#![feature(lint_reasons)]
// If you turn off deduplicate diagnostics (which rustc turns on by default but
// compiletest turns off when it runs ui tests), then the errors are
// (unfortunately) repeated here because the checking is done as we read in the
// errors, and currently that happens two or three different times, depending on
// compiler flags.
//
// The test is much cleaner if we deduplicate, though.
//@ compile-flags: -Z deduplicate-diagnostics=true
#![forbid(
unsafe_code,
//~^ NOTE `forbid` level set here
//~| NOTE the lint level is defined here
reason = "our errors & omissions insurance policy doesn't cover unsafe Rust"
)]
use std::ptr;
fn main() {
let a_billion_dollar_mistake = ptr::null();
#[allow(unsafe_code)]
//~^ ERROR allow(unsafe_code) incompatible with previous forbid
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE overruled by previous forbid
unsafe {
//~^ ERROR usage of an `unsafe` block
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
*a_billion_dollar_mistake
}
}