mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
32 lines
1.1 KiB
Rust
32 lines
1.1 KiB
Rust
//@ needs-llvm-components: x86
|
|
//@ compile-flags: --target=x86_64-unknown-linux-gnu --crate-type=rlib -Cno-prepopulate-passes
|
|
#![no_core]
|
|
#![feature(no_core, lang_items, c_unwind)]
|
|
#[lang="sized"]
|
|
trait Sized { }
|
|
|
|
// Test that `nounwind` attributes are correctly applied to exported `sysv64` and
|
|
// `sysv64-unwind` extern functions. `sysv64-unwind` functions MUST NOT have this attribute. We
|
|
// disable optimizations above to prevent LLVM from inferring the attribute.
|
|
|
|
// CHECK: @rust_item_that_cannot_unwind() unnamed_addr #0 {
|
|
#[no_mangle]
|
|
pub extern "sysv64" fn rust_item_that_cannot_unwind() {
|
|
}
|
|
|
|
// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
|
|
#[no_mangle]
|
|
pub extern "sysv64-unwind" fn rust_item_that_can_unwind() {
|
|
}
|
|
|
|
// Now, make some assertions that the LLVM attributes for these functions are correct. First, make
|
|
// sure that the first item is correctly marked with the `nounwind` attribute:
|
|
//
|
|
// CHECK: attributes #0 = { {{.*}}nounwind{{.*}} }
|
|
//
|
|
// Next, let's assert that the second item, which CAN unwind, does not have this attribute.
|
|
//
|
|
// CHECK: attributes #1 = {
|
|
// CHECK-NOT: nounwind
|
|
// CHECK: }
|