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//@ run-pass
#![allow(non_upper_case_globals)]
#![allow(dead_code)]
// `expr?` expands to:
//
// match expr {
// Ok(val) => val,
// Err(err) => return Err(From::from(err)),
// }
//
// This test verifies that the expansion is hygienic, i.e., it's not affected by other `val` and
// `err` bindings that may be in scope.
use std::num::ParseIntError;
fn main() {
assert_eq!(parse(), Ok(1));
}
fn parse() -> Result<i32, ParseIntError> {
const val: char = 'a';
const err: char = 'b';
Ok("1".parse::<i32>()?)
}
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