rust/tests/fail/validity/cast_fn_ptr1.rs

14 lines
441 B
Rust

// compile-flags: -Zmiri-permissive-provenance
fn main() {
// Cast a function pointer such that on a call, the argument gets transmuted
// from raw ptr to reference. This is ABI-compatible, so it's not the call that
// should fail, but validation should.
fn f(_x: &i32) {}
let g: fn(*const i32) = unsafe { std::mem::transmute(f as fn(&i32)) };
g(0usize as *const i32)
//~^ ERROR encountered a null reference
}