Add test missed in r843a9778fcd5

Differential Revision: https://reviews.llvm.org/D75768

clang/test/Sema/builtin-returnaddress.c

@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -fsyntax-only -Wframe-address -verify %s
+// RUN: %clang_cc1 -fsyntax-only -Wmost -verify %s
+
+void* a(unsigned x) {
+return __builtin_return_address(0);
+}
+
+void* b(unsigned x) {
+return __builtin_return_address(1); // expected-warning{{calling '__builtin_return_address' with a nonzero argument is unsafe}}
+}
+
+void* c(unsigned x) {
+return __builtin_frame_address(0);
+}
+
+void* d(unsigned x) {
+return __builtin_frame_address(1); // expected-warning{{calling '__builtin_frame_address' with a nonzero argument is unsafe}}
+}
+