rust/tests/codegen/unwind-abis/stdcall-unwind-abi.rs
Nicholas Nethercote 72800d3b89 Run rustfmt on tests/codegen/.
Except for `simd-intrinsic/`, which has a lot of files containing
multiple types like `u8x64` which really are better when hand-formatted.

There is a surprising amount of two-space indenting in this directory.

Non-trivial changes:
- `rustfmt::skip` needed in `debug-column.rs` to preserve meaning of the
  test.
- `rustfmt::skip` used in a few places where hand-formatting read more
  nicely: `enum/enum-match.rs`
- Line number adjustments needed for the expected output of
  `debug-column.rs` and `coroutine-debug.rs`.
2024-05-31 15:56:43 +10:00

30 lines
1.1 KiB
Rust

//@ needs-llvm-components: x86
//@ compile-flags: --target=i686-pc-windows-msvc --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 `stdcall` and `stdcall-unwind`
// extern functions. `stdcall-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 "stdcall" fn rust_item_that_cannot_unwind() {}
// CHECK: @rust_item_that_can_unwind() unnamed_addr #1 {
#[no_mangle]
pub extern "stdcall-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: }