mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 22:41:50 +00:00
47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
// revisions: noopt opt opt_with_overflow_checks
|
|
//[noopt]compile-flags: -C opt-level=0
|
|
//[opt]compile-flags: -O
|
|
//[opt_with_overflow_checks]compile-flags: -C overflow-checks=on -O
|
|
|
|
#![crate_type="lib"]
|
|
|
|
pub trait Foo {
|
|
const NEG: i32;
|
|
const NEG_REV: i32;
|
|
|
|
const ADD: i32;
|
|
const ADD_REV: i32;
|
|
|
|
const DIV: i32;
|
|
const DIV_REV: i32;
|
|
|
|
const OOB: i32;
|
|
const OOB_REV: i32;
|
|
}
|
|
|
|
// These constants cannot be evaluated already (they depend on `T::N`), so they can just be linted
|
|
// like normal run-time code. But codegen works a bit different in const context, so this test
|
|
// makes sure that we still catch overflow. Also make sure we emit the same lints if we reverse the
|
|
// operands (so that the generic operand comes first).
|
|
impl<T: Foo> Foo for Vec<T> {
|
|
const NEG: i32 = -i32::MIN + T::NEG;
|
|
//~^ ERROR arithmetic operation will overflow
|
|
const NEG_REV: i32 = T::NEG + (-i32::MIN);
|
|
//~^ ERROR arithmetic operation will overflow
|
|
|
|
const ADD: i32 = (i32::MAX+1) + T::ADD;
|
|
//~^ ERROR arithmetic operation will overflow
|
|
const ADD_REV: i32 = T::ADD + (i32::MAX+1);
|
|
//~^ ERROR arithmetic operation will overflow
|
|
|
|
const DIV: i32 = (1/0) + T::DIV;
|
|
//~^ ERROR operation will panic
|
|
const DIV_REV: i32 = T::DIV + (1/0);
|
|
//~^ ERROR operation will panic
|
|
|
|
const OOB: i32 = [1][1] + T::OOB;
|
|
//~^ ERROR operation will panic
|
|
const OOB_REV: i32 = T::OOB + [1][1];
|
|
//~^ ERROR operation will panic
|
|
}
|