diff --git a/Objects/abstract.c b/Objects/abstract.c
index 1f9b603..fc73a9f 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1793,8 +1793,12 @@
 #ifdef VA_LIST_IS_ARRAY
 	memcpy(countva, va, sizeof(va_list));
 #else
+#ifdef __va_copy
+	__va_copy(countva, va);
+#else
 	countva = va;
 #endif
+#endif
 
 	while (((PyObject *)va_arg(countva, PyObject *)) != NULL)
 		++n;
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 5e40524..bf548cd 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -156,8 +156,12 @@
 #ifdef VA_LIST_IS_ARRAY
 	memcpy(count, vargs, sizeof(va_list));
 #else
+#ifdef  __va_copy
+	__va_copy(count, vargs);
+#else
 	count = vargs;
 #endif
+#endif
 	/* step 1: figure out how large a buffer we need */
 	for (f = format; *f; f++) {
 		if (*f == '%') {
diff --git a/Python/getargs.c b/Python/getargs.c
index 280ffc3..cc0409d 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -61,8 +61,12 @@
 #ifdef VA_LIST_IS_ARRAY
 	memcpy(lva, va, sizeof(va_list));
 #else
+#ifdef __va_copy
+	__va_copy(lva, va);
+#else
 	lva = va;
 #endif
+#endif
 
 	return vgetargs1(args, format, &lva, 0);
 }
diff --git a/Python/modsupport.c b/Python/modsupport.c
index f4f8298..1f8ef07 100644
--- a/Python/modsupport.c
+++ b/Python/modsupport.c
@@ -418,8 +418,12 @@
 #ifdef VA_LIST_IS_ARRAY
 	memcpy(lva, va, sizeof(va_list));
 #else
+#ifdef __va_copy
+	__va_copy(lva, va);
+#else
 	lva = va;
 #endif
+#endif
 
 	if (n < 0)
 		return NULL;