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//@ 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
}
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