1 // RUN: %clang_cc1 -fsyntax-only -verify -pedantic -std=c++11 %s
2 
3 extern "C" {
4 extern int scanf(const char *restrict, ...);
5 extern int printf(const char *restrict, ...);
6 }
7 
f(char ** sp,float * fp)8 void f(char **sp, float *fp) {
9   scanf("%as", sp); // expected-warning{{format specifies type 'float *' but the argument has type 'char **'}}
10 
11   printf("%p", sp); // expected-warning{{format specifies type 'void *' but the argument has type 'char **'}}
12   scanf("%p", sp);  // expected-warning{{format specifies type 'void **' but the argument has type 'char **'}}
13 
14   printf("%a", 1.0);
15   scanf("%afoobar", fp);
16   printf(nullptr);
17   printf(*sp); // expected-warning {{not a string literal}}
18 
19   // PR13099
20   printf(
21     R"foobar(%)foobar"
22     R"bazquux(d)bazquux" // expected-warning {{more '%' conversions than data arguments}}
23     R"xyzzy()xyzzy");
24 
25   printf(u8"this is %d test", 0); // ok
26   printf(u8R"foo(
27       \u1234\U0010fffe
28       %d)foo" // expected-warning {{more '%' conversions than data arguments}}
29   );
30 
31   printf("init list: %d", { 0 }); // expected-error {{cannot pass initializer list to variadic function; expected type from format string was 'int'}}
32   printf("void: %d", f(sp, fp)); // expected-error {{cannot pass expression of type 'void' to variadic function; expected type from format string was 'int'}}
33   printf(0, { 0 }); // expected-error {{cannot pass initializer list to variadic function}}
34 }
35