src/tools/clippy/tests/ui/checked_conversions.fixed

   1 // run-rustfix
   2
   3 #![feature(custom_inner_attributes)]
   4 #![allow(
   5     clippy::cast_lossless,
   6     unused,
   7     // Int::max_value will be deprecated in the future
   8     deprecated,
   9 )]
  10 #![warn(clippy::checked_conversions)]
  11
  12 // Positive tests
  13
  14 // Signed to unsigned
  15
  16 pub fn i64_to_u32(value: i64) {
  17     let _ = u32::try_from(value).is_ok();
  18     let _ = u32::try_from(value).is_ok();
  19 }
  20
  21 pub fn i64_to_u16(value: i64) {
  22     let _ = u16::try_from(value).is_ok();
  23     let _ = u16::try_from(value).is_ok();
  24 }
  25
  26 pub fn isize_to_u8(value: isize) {
  27     let _ = u8::try_from(value).is_ok();
  28     let _ = u8::try_from(value).is_ok();
  29 }
  30
  31 // Signed to signed
  32
  33 pub fn i64_to_i32(value: i64) {
  34     let _ = i32::try_from(value).is_ok();
  35     let _ = i32::try_from(value).is_ok();
  36 }
  37
  38 pub fn i64_to_i16(value: i64) {
  39     let _ = i16::try_from(value).is_ok();
  40     let _ = i16::try_from(value).is_ok();
  41 }
  42
  43 // Unsigned to X
  44
  45 pub fn u32_to_i32(value: u32) {
  46     let _ = i32::try_from(value).is_ok();
  47     let _ = i32::try_from(value).is_ok();
  48 }
  49
  50 pub fn usize_to_isize(value: usize) {
  51     let _ = isize::try_from(value).is_ok() && value as i32 == 5;
  52     let _ = isize::try_from(value).is_ok() && value as i32 == 5;
  53 }
  54
  55 pub fn u32_to_u16(value: u32) {
  56     let _ = u16::try_from(value).is_ok() && value as i32 == 5;
  57     let _ = u16::try_from(value).is_ok() && value as i32 == 5;
  58 }
  59
  60 // Negative tests
  61
  62 pub fn no_i64_to_i32(value: i64) {
  63     let _ = value <= (i32::max_value() as i64) && value >= 0;
  64     let _ = value <= (i32::MAX as i64) && value >= 0;
  65 }
  66
  67 pub fn no_isize_to_u8(value: isize) {
  68     let _ = value <= (u8::max_value() as isize) && value >= (u8::min_value() as isize);
  69     let _ = value <= (u8::MAX as isize) && value >= (u8::MIN as isize);
  70 }
  71
  72 pub fn i8_to_u8(value: i8) {
  73     let _ = value >= 0;
  74 }
  75
  76 // Do not lint
  77 pub const fn issue_8898(i: u32) -> bool {
  78     i <= i32::MAX as u32
  79 }
  80
  81 fn msrv_1_33() {
  82     #![clippy::msrv = "1.33"]
  83
  84     let value: i64 = 33;
  85     let _ = value <= (u32::MAX as i64) && value >= 0;
  86 }
  87
  88 fn msrv_1_34() {
  89     #![clippy::msrv = "1.34"]
  90
  91     let value: i64 = 34;
  92     let _ = u32::try_from(value).is_ok();
  93 }
  94
  95 fn main() {}