rust/tests/run-make/mte-ffi/foo_int.rs
Damian Heaton e8ce9fac85 Add tests to ensure MTE tags are preserved across FFI boundaries
Added run-make tests to verify that, between a Rust-C FFI boundary in both directions,
any MTE tags included in a pointer are preserved for the following pointer types, as
well as any information stored using TBI:
- int
- float
- string
- function
2024-07-30 10:12:51 +01:00

20 lines
322 B
Rust

#![crate_type = "cdylib"]
#![crate_name = "foo"]
use std::os::raw::c_uint;
extern "C" {
fn bar(ptr: *const c_uint);
}
#[no_mangle]
pub extern "C" fn foo(ptr: *mut c_uint) {
assert_eq!((ptr as usize) >> 56, 0x1f);
unsafe {
*ptr = 0x63;
*ptr.wrapping_add(1) = 0x64;
bar(ptr);
}
}