| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // ignore-tidy-linelength |
| |
| // Issue 23030: Detect overflowing discriminant |
| |
| // See also run-pass/discrim-explicit-23030.rs where the suggested |
| // workaround is tested. |
| |
| use std::{i8,u8,i16,u16,i32,u32,i64, u64}; |
| |
| fn f_i8() { |
| #[repr(i8)] |
| enum A { |
| Ok = i8::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_u8() { |
| #[repr(u8)] |
| enum A { |
| Ok = u8::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_i16() { |
| #[repr(i16)] |
| enum A { |
| Ok = i16::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_u16() { |
| #[repr(u16)] |
| enum A { |
| Ok = u16::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| //~| overflowed on value after 65535 |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_i32() { |
| #[repr(i32)] |
| enum A { |
| Ok = i32::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| //~| overflowed on value after 2147483647 |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_u32() { |
| #[repr(u32)] |
| enum A { |
| Ok = u32::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| //~| overflowed on value after 4294967295 |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_i64() { |
| #[repr(i64)] |
| enum A { |
| Ok = i64::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| //~| overflowed on value after 9223372036854775807 |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn f_u64() { |
| #[repr(u64)] |
| enum A { |
| Ok = u64::MAX - 1, |
| Ok2, |
| OhNo, //~ ERROR enum discriminant overflowed [E0370] |
| //~| overflowed on value after 18446744073709551615 |
| } |
| |
| let x = A::Ok; |
| } |
| |
| fn main() { } |