File: c-variadic-copy.rs

package info (click to toggle)
rustc-web 1.70.0%2Bdfsg1-7~deb11u1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,517,036 kB
  • sloc: xml: 147,962; javascript: 10,210; sh: 8,590; python: 8,220; ansic: 5,901; cpp: 4,635; makefile: 4,006; asm: 2,856
file content (16 lines) | stat: -rw-r--r-- 396 bytes parent folder | download | duplicates (16)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
// 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);
}