src/test/ui/lint/lint-exceeding-bitshifts2.rs

// build-fail
// compile-flags: -O

#![deny(exceeding_bitshifts, const_err)]
#![allow(unused_variables)]
#![allow(dead_code)]

fn main() {
      let n = 1u8 << (4+3);
      let n = 1u8 << (4+4); //~ ERROR: attempt to shift left with overflow
      let n = 1i64 >> [63][0];
      let n = 1i64 >> [64][0]; //~ ERROR: attempt to shift right with overflow

      #[cfg(target_pointer_width = "32")]
      const BITS: usize = 32;
      #[cfg(target_pointer_width = "64")]
      const BITS: usize = 64;
      let n = 1_isize << BITS; //~ ERROR: attempt to shift left with overflow
      let n = 1_usize << BITS; //~ ERROR: attempt to shift left with overflow
}