1 // ignore-wasm32-bare compiled with panic=abort by default
2 // compile-flags: -C no-prepopulate-passes
6 #![feature(c_variadic)]
12 fn foreign_c_variadic_0(_: i32, ...);
13 fn foreign_c_variadic_1(_: VaList, ...);
16 pub unsafe extern "C" fn use_foreign_c_variadic_0() {
17 // Ensure that we correctly call foreign C-variadic functions.
18 // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM:i32( signext)?]] 0)
19 foreign_c_variadic_0(0);
20 // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42)
21 foreign_c_variadic_0(0, 42i32);
22 // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024)
23 foreign_c_variadic_0(0, 42i32, 1024i32);
24 // CHECK: call void (i32, ...) @foreign_c_variadic_0([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024, [[PARAM]] 0)
25 foreign_c_variadic_0(0, 42i32, 1024i32, 0i32);
28 // Ensure that we do not remove the `va_list` passed to the foreign function when
29 // removing the "spoofed" `VaListImpl` that is used by Rust defined C-variadics.
30 pub unsafe extern "C" fn use_foreign_c_variadic_1_0(ap: VaList) {
31 // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap)
32 foreign_c_variadic_1(ap);
35 pub unsafe extern "C" fn use_foreign_c_variadic_1_1(ap: VaList) {
36 // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 42)
37 foreign_c_variadic_1(ap, 42i32);
39 pub unsafe extern "C" fn use_foreign_c_variadic_1_2(ap: VaList) {
40 // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 2, [[PARAM]] 42)
41 foreign_c_variadic_1(ap, 2i32, 42i32);
44 pub unsafe extern "C" fn use_foreign_c_variadic_1_3(ap: VaList) {
45 // CHECK: call void ({{.*}}, ...) @foreign_c_variadic_1({{.*}} %ap, [[PARAM]] 2, [[PARAM]] 42, [[PARAM]] 0)
46 foreign_c_variadic_1(ap, 2i32, 42i32, 0i32);
49 // Ensure that `va_start` and `va_end` are properly injected.
51 pub unsafe extern "C" fn c_variadic(n: i32, mut ap: ...) -> i32 {
52 // CHECK: call void @llvm.va_start
55 sum += ap.arg::<i32>();
58 // CHECK: call void @llvm.va_end
61 // Ensure that we generate the correct `call` signature when calling a Rust
62 // defined C-variadic.
63 pub unsafe fn test_c_variadic_call() {
64 // CHECK: call [[RET:(signext )?i32]] (i32, ...) @c_variadic([[PARAM]] 0)
66 // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42)
68 // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024)
69 c_variadic(0, 42i32, 1024i32);
70 // CHECK: call [[RET]] (i32, ...) @c_variadic([[PARAM]] 0, [[PARAM]] 42, [[PARAM]] 1024, [[PARAM]] 0)
71 c_variadic(0, 42i32, 1024i32, 0i32);