[rustc.git] / src / test / codegen / pie-relocation-model.rs

// compile-flags: -C relocation-model=pie
// only-x86_64-unknown-linux-gnu

#![crate_type = "rlib"]

// With PIE we know local functions cannot be interpositioned, we can mark them
// as dso_local.
// CHECK: define dso_local i8 @call_foreign_fn()
#[no_mangle]
pub fn call_foreign_fn() -> u8 {
    unsafe {
        foreign_fn()
    }
}

// External functions are still marked as non-dso_local, since we don't know if the symbol
// is defined in the binary or in the shared library.
// CHECK: declare zeroext i8 @foreign_fn()
extern "C" {fn foreign_fn() -> u8;}

// CHECK: !{i32 {{[78]}}, !"PIC Level", i32 2}
// CHECK: !{i32 7, !"PIE Level", i32 2}
Commit	Line	Data
c295e0f8 XL	1	// compile-flags: -C relocation-model=pie
	2	// only-x86_64-unknown-linux-gnu
	3
	4	#![crate_type = "rlib"]
	5
	6	// With PIE we know local functions cannot be interpositioned, we can mark them
	7	// as dso_local.
	8	// CHECK: define dso_local i8 @call_foreign_fn()
	9	#[no_mangle]
	10	pub fn call_foreign_fn() -> u8 {
	11	unsafe {
	12	foreign_fn()
	13	}
	14	}
	15
	16	// External functions are still marked as non-dso_local, since we don't know if the symbol
	17	// is defined in the binary or in the shared library.
	18	// CHECK: declare zeroext i8 @foreign_fn()
	19	extern "C" {fn foreign_fn() -> u8;}
	20
f2b60f7d	21	// CHECK: !{i32 {{[78]}}, !"PIC Level", i32 2}
c295e0f8	22	// CHECK: !{i32 7, !"PIE Level", i32 2}