36 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -std=c++11 %s2 3extern "C" {4extern int scanf(const char *restrict, ...);5extern int printf(const char *restrict, ...);6}7 8void 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 // expected-note@-1{{treat the string as an argument to avoid this}}19 20 // PR1309921 printf(22 R"foobar(%)foobar"23 R"bazquux(d)bazquux" // expected-warning {{more '%' conversions than data arguments}}24 R"xyzzy()xyzzy");25 26 printf(u8"this is %d test", 0); // ok27 printf(u8R"foo(28 \u1234\U0010fffe29 %d)foo" // expected-warning {{more '%' conversions than data arguments}}30 );31 32 printf("init list: %d", { 0 }); // expected-error {{cannot pass initializer list to variadic function; expected type from format string was 'int'}}33 printf("void: %d", f(sp, fp)); // expected-error {{cannot pass expression of type 'void' to variadic function; expected type from format string was 'int'}}34 printf(0, { 0 }); // expected-error {{cannot pass initializer list to variadic function}}35}36