1 // RUN: %clang_cc1 -verify -Wclass-varargs -std=c++98 %s 2 // RUN: %clang_cc1 -verify -Wclass-varargs -std=c++11 %s 3 4 struct A {}; 5 struct B { ~B(); }; 6 class C { char *c_str(); }; 7 struct D { char *c_str(); }; 8 struct E { E(); }; 9 struct F { F(); char *c_str(); }; 10 11 void v(...); 12 void w(const char*, ...) __attribute__((format(printf, 1, 2))); 13 14 void test(A a, B b, C c, D d, E e, F f) { 15 v(a); // expected-warning-re {{passing object of class type 'A' through variadic function{{$}}}} 16 v(b); // expected-error-re {{cannot pass object of non-{{POD|trivial}} type 'B' through variadic function; call will abort at runtime}} 17 v(c); // expected-warning {{passing object of class type 'C' through variadic function; did you mean to call '.c_str()'?}} 18 v(d); // expected-warning {{passing object of class type 'D' through variadic function; did you mean to call '.c_str()'?}} 19 v(e); 20 v(f); 21 #if __cplusplus < 201103L 22 // expected-error@-3 {{cannot pass object of non-POD type 'E' through variadic function; call will abort at runtime}} 23 // expected-error@-3 {{cannot pass object of non-POD type 'F' through variadic function; call will abort at runtime}} 24 #else 25 // expected-warning-re@-6 {{passing object of class type 'E' through variadic function{{$}}}} 26 // expected-warning@-6 {{passing object of class type 'F' through variadic function; did you mean to call '.c_str()'?}} 27 #endif 28 29 v(d.c_str()); 30 v(f.c_str()); 31 v(0); 32 v('x'); 33 34 w("%s", a); // expected-warning {{format specifies type 'char *' but the argument has type 'A'}} 35 w("%s", b); // expected-error-re {{cannot pass non-{{POD|trivial}} object of type 'B' to variadic function; expected type from format string was 'char *'}} 36 w("%s", c); // expected-warning {{format specifies type 'char *' but the argument has type 'C'}} 37 w("%s", d); // expected-warning {{format specifies type 'char *' but the argument has type 'D'}} 38 w("%s", e); 39 w("%s", f); 40 #if __cplusplus < 201103L 41 // expected-error@-3 {{cannot pass non-POD object of type 'E' to variadic function; expected type from format string was 'char *'}} 42 // expected-error@-3 {{cannot pass non-POD object of type 'F' to variadic function; expected type from format string was 'char *'}} 43 // expected-note@-4 {{did you mean to call the c_str() method?}} 44 #else 45 // expected-warning@-7 {{format specifies type 'char *' but the argument has type 'E'}} 46 // expected-warning@-7 {{format specifies type 'char *' but the argument has type 'F'}} 47 #endif 48 } 49
