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// 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]
//~| NOTE overflowed on value after 127i8
//~| NOTE explicitly set `OhNo = -128i8` if that is desired outcome
}
let x = A::Ok;
}
fn f_u8() {
#[repr(u8)]
enum A {
Ok = u8::MAX - 1,
Ok2,
OhNo, //~ ERROR enum discriminant overflowed [E0370]
//~| NOTE overflowed on value after 255u8
//~| NOTE explicitly set `OhNo = 0u8` if that is desired outcome
}
let x = A::Ok;
}
fn f_i16() {
#[repr(i16)]
enum A {
Ok = i16::MAX - 1,
Ok2,
OhNo, //~ ERROR enum discriminant overflowed [E0370]
//~| NOTE overflowed on value after 32767i16
//~| NOTE explicitly set `OhNo = -32768i16` if that is desired outcome
}
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 65535u16
//~| NOTE explicitly set `OhNo = 0u16` if that is desired outcome
}
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 2147483647i32
//~| NOTE explicitly set `OhNo = -2147483648i32` if that is desired outcome
}
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 4294967295u32
//~| NOTE explicitly set `OhNo = 0u32` if that is desired outcome
}
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 9223372036854775807i64
//~| NOTE explicitly set `OhNo = -9223372036854775808i64` if that is desired outcome
}
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 18446744073709551615u64
//~| NOTE explicitly set `OhNo = 0u64` if that is desired outcome
}
let x = A::Ok;
}
fn main() { }
|
