--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/PCH/va_arg.h	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,15 @@
+// Header for PCH test va_arg.c
+
+typedef __builtin_va_list va_list;
+char *f (char * (*g) (char **, int), char **p, ...) {
+    char *s;
+    va_list v;
+    s = g (p, __builtin_va_arg(v, int));
+}
+
+typedef __builtin_ms_va_list __ms_va_list;
+char *__attribute__((ms_abi)) h(char *(*i)(char **, int), char **p, ...) {
+  char *s;
+  __ms_va_list v;
+  s = i(p, __builtin_va_arg(v, int));
+}