95 lines
2.0 KiB
Rust
95 lines
2.0 KiB
Rust
// 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
|
|
//
|
|
// Check that we detect the overflow even if enum is not used.
|
|
|
|
// 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 on value after 127i8; set explicitly via OhNo = -128i8 if that is desired outcome
|
|
}
|
|
}
|
|
|
|
fn f_u8() {
|
|
#[repr(u8)]
|
|
enum A {
|
|
Ok = u8::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed on value after 255u8; set explicitly via OhNo = 0u8 if that is desired outcome
|
|
}
|
|
}
|
|
|
|
fn f_i16() {
|
|
#[repr(i16)]
|
|
enum A {
|
|
Ok = i16::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn f_u16() {
|
|
#[repr(u16)]
|
|
enum A {
|
|
Ok = u16::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn f_i32() {
|
|
#[repr(i32)]
|
|
enum A {
|
|
Ok = i32::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn f_u32() {
|
|
#[repr(u32)]
|
|
enum A {
|
|
Ok = u32::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn f_i64() {
|
|
#[repr(i64)]
|
|
enum A {
|
|
Ok = i64::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn f_u64() {
|
|
#[repr(u64)]
|
|
enum A {
|
|
Ok = u64::MAX - 1,
|
|
Ok2,
|
|
OhNo, //~ ERROR enum discriminant overflowed
|
|
}
|
|
}
|
|
|
|
fn main() { }
|