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#![deny(overflowing_literals)]
fn main() {
// Valid cases - should suggest char literal
// u8 range (0-255)
const VALID_U8_1: char = 0x41 as char; // 'A'
const VALID_U8_2: char = 0xFF as char; // maximum u8
const VALID_U8_3: char = 0x00 as char; // minimum u8
// Valid Unicode in lower range [0x0, 0xD7FF]
const VALID_LOW_1: char = 0x1000 as char; // 4096
//~^ ERROR: only `u8` can be cast into `char`
const VALID_LOW_2: char = 0xD7FF as char; // last valid in lower range
//~^ ERROR: only `u8` can be cast into `char`
const VALID_LOW_3: char = 0x0500 as char; // cyrillic range
//~^ ERROR: only `u8` can be cast into `char`
// Valid Unicode in upper range [0xE000, 0x10FFFF]
const VALID_HIGH_1: char = 0xE000 as char; // first valid in upper range
//~^ ERROR only `u8` can be cast into `char`
const VALID_HIGH_2: char = 0x1F888 as char; // 129160 - example from issue
//~^ ERROR only `u8` can be cast into `char`
const VALID_HIGH_3: char = 0x10FFFF as char; // maximum valid Unicode
//~^ ERROR only `u8` can be cast into `char`
const VALID_HIGH_4: char = 0xFFFD as char; // replacement character
//~^ ERROR only `u8` can be cast into `char`
const VALID_HIGH_5: char = 0x1F600 as char; // emoji
//~^ ERROR only `u8` can be cast into `char`
// Invalid cases - should show InvalidCharCast
// Surrogate range [0xD800, 0xDFFF] - reserved for UTF-16
const INVALID_SURROGATE_1: char = 0xD800 as char; // first surrogate
//~^ ERROR: surrogate values are not valid
const INVALID_SURROGATE_2: char = 0xDFFF as char; // last surrogate
//~^ ERROR: surrogate values are not valid
const INVALID_SURROGATE_3: char = 0xDB00 as char; // middle of surrogate range
//~^ ERROR: surrogate values are not valid
// Too large values (> 0x10FFFF)
const INVALID_TOO_BIG_1: char = 0x110000 as char; // one more than maximum
//~^ ERROR: value exceeds maximum `char` value
const INVALID_TOO_BIG_2: char = 0xEF8888 as char; // example from issue
//~^ ERROR: value exceeds maximum `char` value
const INVALID_TOO_BIG_3: char = 0x1FFFFF as char; // much larger
//~^ ERROR: value exceeds maximum `char` value
const INVALID_TOO_BIG_4: char = 0xFFFFFF as char; // 24-bit maximum
//~^ ERROR: value exceeds maximum `char` value
// Boundary cases
const BOUNDARY_1: char = 0xD7FE as char; // valid, before surrogate
//~^ ERROR only `u8` can be cast into `char`
const BOUNDARY_2: char = 0xE001 as char; // valid, after surrogate
//~^ ERROR only `u8` can be cast into `char`
const BOUNDARY_3: char = 0x10FFFE as char; // valid, near maximum
//~^ ERROR only `u8` can be cast into `char`
}
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