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
test(A a,B b,C c,D d,E e,F f)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