mirror of https://github.com/rust-lang/rust
32 lines
790 B
Rust
32 lines
790 B
Rust
//@ normalize-stderr-test "\d+ bits" -> "N bits"
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// Tests that `transmute` cannot be called on types of different size.
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#![allow(warnings)]
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#![feature(specialization)]
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use std::mem::transmute;
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unsafe fn f() {
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let _: i8 = transmute(16i16);
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//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
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}
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unsafe fn g<T>(x: &T) {
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let _: i8 = transmute(x);
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//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
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}
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trait Specializable { type Output; }
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impl<T> Specializable for T {
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default type Output = u16;
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}
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unsafe fn specializable<T>(x: u16) -> <T as Specializable>::Output {
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transmute(x)
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//~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
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}
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fn main() {}
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