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 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
