X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Frt%2Frust_test_helpers.c;h=320cd3dbd851a4e638f5c008da30c4de74413c46;hb=46dcffd05b46e62c27629f4231fc794e94e614a8;hp=c755cf67caa9f6b52dad2e8007673b6fc1bd8f94;hpb=ca3e557ee8a6451847b3bf6024175a2fe4601737;p=rust.git

diff --git a/src/rt/rust_test_helpers.c b/src/rt/rust_test_helpers.c
index c755cf67caa..320cd3dbd85 100644
--- a/src/rt/rust_test_helpers.c
+++ b/src/rt/rust_test_helpers.c
@@ -12,6 +12,7 @@
 
 #include <stdint.h>
 #include <assert.h>
+#include <stdarg.h>
 
 // These functions are used in the unit tests for C ABI calls.
 
@@ -135,6 +136,8 @@ struct ManyInts {
     struct TwoU8s arg6;
 };
 
+// MSVC doesn't allow empty structs or unions
+#ifndef _MSC_VER
 struct Empty {
 };
 
@@ -148,6 +151,7 @@ rust_dbg_extern_empty_struct(struct ManyInts v1, struct Empty e, struct ManyInts
     assert(v1.arg6.one == v2.arg6.one + 1);
     assert(v1.arg6.two == v2.arg6.two + 1);
 }
+#endif
 
 intptr_t
 rust_get_test_int() {
@@ -191,9 +195,7 @@ rust_dbg_abi_2(struct floats f) {
 }
 
 int
-rust_dbg_static_mut;
-
-int rust_dbg_static_mut = 3;
+rust_dbg_static_mut = 3;
 
 void
 rust_dbg_static_mut_check_four() {
@@ -217,3 +219,22 @@ uint64_t get_y(struct S s) {
 uint64_t get_z(struct S s) {
     return s.z;
 }
+
+uint64_t get_c_many_params(void *a, void *b, void *c, void *d, struct quad f) {
+    return f.c;
+}
+
+// Calculates the average of `(x + y) / n` where x: i64, y: f64. There must be exactly n pairs
+// passed as variadic arguments.
+double rust_interesting_average(uint64_t n, ...) {
+    va_list pairs;
+    double sum = 0.0;
+    int i;
+    va_start(pairs, n);
+    for(i = 0; i < n; i += 1) {
+        sum += (double)va_arg(pairs, int64_t);
+        sum += va_arg(pairs, double);
+    }
+    va_end(pairs);
+    return sum / n;
+}