1 // RUN: %clang_cc1 -fsyntax-only -Wformat-nonliteral -verify %s
2 struct S {
3   static void f(const char*, ...) __attribute__((format(printf, 1, 2)));
4   static const char* f2(const char*) __attribute__((format_arg(1)));
5 
6   // GCC has a hidden 'this' argument in member functions which is why
7   // the format argument is argument 2 here.
8   void g(const char*, ...) __attribute__((format(printf, 2, 3)));
9   const char* g2(const char*) __attribute__((format_arg(2)));
10 
11   void h(const char*, ...) __attribute__((format(printf, 1, 4))); // \
12       expected-error{{implicit this argument as the format string}}
13   void h2(const char*, ...) __attribute__((format(printf, 2, 1))); // \
14       expected-error{{out of bounds}}
15   const char* h3(const char*) __attribute__((format_arg(1))); // \
16       expected-error{{invalid for the implicit this argument}}
17 };
18 
19 // PR5521
20 struct A { void a(const char*,...) __attribute((format(printf,2,3))); };
21 void b(A x) {
22   x.a("%d", 3);
23 }
24 
25 // PR8625: correctly interpret static member calls as not having an implicit
26 // 'this' argument.
27 namespace PR8625 {
28   struct S {
29     static void f(const char*, const char*, ...)
30       __attribute__((format(printf, 2, 3)));
31   };
32   void test(S s, const char* str) {
33     s.f(str, "%s", str);
34   }
35 }
36