[rustc.git] / tests / codegen / c-variadic-copy.rs

// Tests that `VaListImpl::clone` gets inlined into a call to `llvm.va_copy`

#![crate_type = "lib"]
#![feature(c_variadic)]
#![no_std]
use core::ffi::VaList;

extern "C" {
    fn foreign_c_variadic_1(_: VaList, ...);
}

pub unsafe extern "C" fn clone_variadic(ap: VaList) {
    let mut ap2 = ap.clone();
    // CHECK: call void @llvm.va_copy
    foreign_c_variadic_1(ap2.as_va_list(), 42i32);
}
Commit	Line	Data
dc9dc135 XL	1	// Tests that `VaListImpl::clone` gets inlined into a call to `llvm.va_copy`
	2
	3	#![crate_type = "lib"]
	4	#![feature(c_variadic)]
	5	#![no_std]
	6	use core::ffi::VaList;
	7
	8	extern "C" {
	9	fn foreign_c_variadic_1(_: VaList, ...);
	10	}
	11
	12	pub unsafe extern "C" fn clone_variadic(ap: VaList) {
	13	let mut ap2 = ap.clone();
	14	// CHECK: call void @llvm.va_copy
	15	foreign_c_variadic_1(ap2.as_va_list(), 42i32);
	16	}