111 lines
3.1 KiB
Rust
111 lines
3.1 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-tidy-linelength
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// Issue 23030: Detect overflowing discriminant
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//
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// Check that we detect the overflow even if enum is not used.
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// See also run-pass/discrim-explicit-23030.rs where the suggested
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// workaround is tested.
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use std::{i8,u8,i16,u16,i32,u32,i64, u64};
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fn f_i8() {
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#[repr(i8)]
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enum A {
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Ok = i8::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 127i8
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//~| NOTE explicitly set `OhNo = -128i8` if that is desired outcome
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}
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}
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fn f_u8() {
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#[repr(u8)]
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enum A {
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Ok = u8::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 255u8
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//~| NOTE explicitly set `OhNo = 0u8` if that is desired outcome
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}
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}
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fn f_i16() {
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#[repr(i16)]
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enum A {
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Ok = i16::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 32767i16
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//~| NOTE explicitly set `OhNo = -32768i16` if that is desired outcome
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}
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}
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fn f_u16() {
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#[repr(u16)]
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enum A {
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Ok = u16::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 65535u16
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//~| NOTE explicitly set `OhNo = 0u16` if that is desired outcome
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}
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}
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fn f_i32() {
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#[repr(i32)]
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enum A {
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Ok = i32::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 2147483647i32
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//~| NOTE explicitly set `OhNo = -2147483648i32` if that is desired outcome
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}
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}
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fn f_u32() {
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#[repr(u32)]
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enum A {
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Ok = u32::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 4294967295u32
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//~| NOTE explicitly set `OhNo = 0u32` if that is desired outcome
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}
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}
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fn f_i64() {
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#[repr(i64)]
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enum A {
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Ok = i64::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 9223372036854775807i64
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//~| NOTE explicitly set `OhNo = -9223372036854775808i64` if that is desired outcome
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}
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}
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fn f_u64() {
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#[repr(u64)]
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enum A {
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Ok = u64::MAX - 1,
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Ok2,
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OhNo, //~ ERROR enum discriminant overflowed [E0370]
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//~| NOTE overflowed on value after 18446744073709551615u64
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//~| NOTE explicitly set `OhNo = 0u64` if that is desired outcome
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}
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}
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fn main() { }
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