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("%a", 1.0);
12 scanf("%afoobar", fp);
13 printf(nullptr);
14 printf(*sp); // expected-warning {{not a string literal}}
15
16 // PR13099
17 printf(
18 R"foobar(%)foobar"
19 R"bazquux(d)bazquux" // expected-warning {{more '%' conversions than data arguments}}
20 R"xyzzy()xyzzy");
21
22 printf(u8"this is %d test", 0); // ok
23 printf(u8R"foo(
24 \u1234\U0010fffe
25 %d)foo" // expected-warning {{more '%' conversions than data arguments}}
26 );
27
28 printf("init list: %d", { 0 }); // expected-error {{cannot pass initializer list to variadic function; expected type from format string was 'int'}}
29 printf("void: %d", f(sp, fp)); // expected-error {{cannot pass expression of type 'void' to variadic function; expected type from format string was 'int'}}
30 printf(0, { 0 }); // expected-error {{cannot pass initializer list to variadic function}}
31 }
32