rust-clippy/tests/ui/implicit_saturating_sub.rs
2020-04-18 12:03:52 +05:30

206 lines
3.1 KiB
Rust

// run-rustfix
#![allow(unused_assignments, unused_mut, clippy::assign_op_pattern)]
#![warn(clippy::implicit_saturating_sub)]
fn main() {
// Tests for unsigned integers
let end_8: u8 = 10;
let start_8: u8 = 5;
let mut u_8: u8 = end_8 - start_8;
// Lint
if u_8 > 0 {
u_8 = u_8 - 1;
}
match end_8 {
10 => {
// Lint
if u_8 > 0 {
u_8 -= 1;
}
},
11 => u_8 += 1,
_ => u_8 = 0,
}
let end_16: u16 = 35;
let start_16: u16 = 40;
let mut u_16: u16 = end_16 - start_16;
// Lint
if u_16 > 0 {
u_16 -= 1;
}
let mut end_32: u32 = 7000;
let mut start_32: u32 = 7010;
let mut u_32: u32 = end_32 - start_32;
// Lint
if u_32 != 0 {
u_32 -= 1;
}
// No Lint
if u_32 > 0 {
u_16 += 1;
}
// No Lint
if u_32 != 0 {
end_32 -= 1;
start_32 += 1;
}
let mut end_64: u64 = 75001;
let mut start_64: u64 = 75000;
let mut u_64: u64 = end_64 - start_64;
// Lint
if u_64 > 0 {
u_64 -= 1;
}
// Lint
if 0 < u_64 {
u_64 -= 1;
}
// Lint
if 0 != u_64 {
u_64 -= 1;
}
// No Lint
if u_64 >= 1 {
u_64 -= 1;
}
// No Lint
if u_64 > 0 {
end_64 -= 1;
}
// Tests for usize
let end_usize: usize = 8054;
let start_usize: usize = 8050;
let mut u_usize: usize = end_usize - start_usize;
// Lint
if u_usize > 0 {
u_usize -= 1;
}
// Tests for signed integers
let endi_8: i8 = 10;
let starti_8: i8 = 50;
let mut i_8: i8 = endi_8 - starti_8;
// Lint
if i_8 > i8::MIN {
i_8 -= 1;
}
// Lint
if i_8 > i8::min_value() {
i_8 -= 1;
}
// Lint
if i_8 != i8::MIN {
i_8 -= 1;
}
// Lint
if i_8 != i8::min_value() {
i_8 -= 1;
}
let endi_16: i16 = 45;
let starti_16: i16 = 44;
let mut i_16: i16 = endi_16 - starti_16;
// Lint
if i_16 > i16::MIN {
i_16 -= 1;
}
// Lint
if i_16 > i16::min_value() {
i_16 -= 1;
}
// Lint
if i_16 != i16::MIN {
i_16 -= 1;
}
// Lint
if i_16 != i16::min_value() {
i_16 -= 1;
}
let endi_32: i32 = 45;
let starti_32: i32 = 44;
let mut i_32: i32 = endi_32 - starti_32;
// Lint
if i_32 > i32::MIN {
i_32 -= 1;
}
// Lint
if i_32 > i32::min_value() {
i_32 -= 1;
}
// Lint
if i_32 != i32::MIN {
i_32 -= 1;
}
// Lint
if i_32 != i32::min_value() {
i_32 -= 1;
}
let endi_64: i64 = 45;
let starti_64: i64 = 44;
let mut i_64: i64 = endi_64 - starti_64;
// Lint
if i64::min_value() < i_64 {
i_64 -= 1;
}
// Lint
if i64::MIN != i_64 {
i_64 -= 1;
}
// Lint
if i64::MIN < i_64 {
i_64 -= 1;
}
// No Lint
if i_64 > 0 {
i_64 -= 1;
}
// No Lint
if i_64 != 0 {
i_64 -= 1;
}
}