1 files changed, 63 insertions, 0 deletions
diff --git a/test/Sema/varargs.c b/test/Sema/varargs.c
new file mode 100644
index 0000000..8d2f0b1
--- /dev/null
+++ b/test/Sema/varargs.c
@@ -0,0 +1,63 @@
+// RUN: clang-cc -fsyntax-only -verify %s &&
+// RUN: clang-cc -fsyntax-only -verify %s -triple x86_64-apple-darwin9
+
+void f1(int a)
+{
+    __builtin_va_list ap;
+    
+    __builtin_va_start(ap, a, a); // expected-error {{too many arguments to function}}
+    __builtin_va_start(ap, a); // expected-error {{'va_start' used in function with fixed args}}
+}
+
+void f2(int a, int b, ...)
+{
+    __builtin_va_list ap;
+    
+    __builtin_va_start(ap, 10); // expected-warning {{second parameter of 'va_start' not last named argument}}
+    __builtin_va_start(ap, a); // expected-warning {{second parameter of 'va_start' not last named argument}}
+    __builtin_va_start(ap, b);
+}
+
+void f3(float a, ...)
+{
+    __builtin_va_list ap;
+    
+    __builtin_va_start(ap, a);
+    __builtin_va_start(ap, (a));
+}
+
+
+// stdarg: PR3075
+void f4(const char *msg, ...) {
+ __builtin_va_list ap;
+ __builtin_stdarg_start((ap), (msg));
+ __builtin_va_end (ap);
+}
+
+void f5() {
+  __builtin_va_list ap;
+  __builtin_va_start(ap,ap); // expected-error {{'va_start' used in function with fixed args}}
+}
+
+void f6(int a, ...) {
+  __builtin_va_list ap;
+  __builtin_va_start(ap); // expected-error {{too few arguments to function}}
+}
+
+// PR3350
+void
+foo(__builtin_va_list authors, ...) {
+  __builtin_va_start (authors, authors);
+  (void)__builtin_va_arg(authors, int);
+  __builtin_va_end (authors);
+}
+
+void f7(int a, ...) {
+  __builtin_va_list ap;
+  __builtin_va_start(ap, a);
+  // FIXME: This error message is sub-par.
+  __builtin_va_arg(ap, int) = 1; // expected-error {{expression is not assignable}}
+  int *x = &__builtin_va_arg(ap, int); // expected-error {{address expression must be an lvalue or a function designator}}
+  __builtin_va_end(ap);
+}
+