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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
// build-pass
// ignore-pass (test emits codegen-time warnings and verifies that they are not errors)
// normalize-stderr-test "shift left by `(64|32)_usize`, which" -> "shift left by `%BITS%`, which"
#![crate_type="lib"]
#![warn(arithmetic_overflow, const_err)]
pub trait Foo {
const N: i32;
}
impl<T: Foo> Foo for Vec<T> {
const N: i32 = T::N << 42; //~ WARN: arithmetic operation will overflow
}
pub fn foo(x: i32) {
let _ = x << 42; //~ WARN: arithmetic operation will overflow
}
pub fn main() {
let n = 1u8 << 7;
let n = 1u8 << 8; //~ WARN: arithmetic operation will overflow
let n = 1u16 << 15;
let n = 1u16 << 16; //~ WARN: arithmetic operation will overflow
let n = 1u32 << 31;
let n = 1u32 << 32; //~ WARN: arithmetic operation will overflow
let n = 1u64 << 63;
let n = 1u64 << 64; //~ WARN: arithmetic operation will overflow
let n = 1i8 << 7;
let n = 1i8 << 8; //~ WARN: arithmetic operation will overflow
let n = 1i16 << 15;
let n = 1i16 << 16; //~ WARN: arithmetic operation will overflow
let n = 1i32 << 31;
let n = 1i32 << 32; //~ WARN: arithmetic operation will overflow
let n = 1i64 << 63;
let n = 1i64 << 64; //~ WARN: arithmetic operation will overflow
let n = 1u8 >> 7;
let n = 1u8 >> 8; //~ WARN: arithmetic operation will overflow
let n = 1u16 >> 15;
let n = 1u16 >> 16; //~ WARN: arithmetic operation will overflow
let n = 1u32 >> 31;
let n = 1u32 >> 32; //~ WARN: arithmetic operation will overflow
let n = 1u64 >> 63;
let n = 1u64 >> 64; //~ WARN: arithmetic operation will overflow
let n = 1i8 >> 7;
let n = 1i8 >> 8; //~ WARN: arithmetic operation will overflow
let n = 1i16 >> 15;
let n = 1i16 >> 16; //~ WARN: arithmetic operation will overflow
let n = 1i32 >> 31;
let n = 1i32 >> 32; //~ WARN: arithmetic operation will overflow
let n = 1i64 >> 63;
let n = 1i64 >> 64; //~ WARN: arithmetic operation will overflow
let n = 1u8;
let n = n << 7;
let n = n << 8; //~ WARN: arithmetic operation will overflow
let n = 1u8 << -8; //~ WARN: arithmetic operation will overflow
let n = 1i8<<(1isize+-1);
let n = 1u8 << (4+3);
let n = 1u8 << (4+4); //~ WARN: arithmetic operation will overflow
let n = 1i64 >> [63][0];
let n = 1i64 >> [64][0]; //~ WARN: arithmetic operation will overflow
#[cfg(target_pointer_width = "32")]
const BITS: usize = 32;
#[cfg(target_pointer_width = "64")]
const BITS: usize = 64;
let n = 1_isize << BITS; //~ WARN: arithmetic operation will overflow
let n = 1_usize << BITS; //~ WARN: arithmetic operation will overflow
}
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