rust/tests/compile-fail/ptr_int_cast.rs

fn main() {
    let x = &1;
    // Casting down to u8 and back up to a pointer loses too much precision; this must not work.
    let x = x as *const i32;
    let x = x as u8; //~ ERROR a raw memory access tried to access part of a pointer value as raw bytes
    let x = x as *const i32;
    let _val = unsafe { *x };
}
Make sure that casting a ptr-integer down to u8 makes it unusable 2017-06-22 17:47:09 -07:00			`fn main() {`
			`let x = &1;`
			`// Casting down to u8 and back up to a pointer loses too much precision; this must not work.`
handle ptr-int casts explicitly in cast.rs 2017-06-22 18:41:10 -07:00			`let x = x as *const i32;`
don't use NOTE in tests 2018-10-19 11:50:17 +02:00			`let x = x as u8; //~ ERROR a raw memory access tried to access part of a pointer value as raw bytes`
handle ptr-int casts explicitly in cast.rs 2017-06-22 18:41:10 -07:00			`let x = x as *const i32;`
do not use 'let _', it is strange 2018-11-26 15:31:53 +01:00			`let _val = unsafe { *x };`
Make sure that casting a ptr-integer down to u8 makes it unusable 2017-06-22 17:47:09 -07:00			`}`