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// RUN: %clang_cc1 -fsyntax-only -verify -Wformat-nonliteral -Wformat-non-iso -fblocks -std=c++11 %s
__attribute__((format(scanf, 1, 2)))
int scanf(const char *, ...);
template<typename... Args>
__attribute__((format(scanf, 1, 2)))
int scan(const char *fmt, Args &&...args) { // expected-warning{{GCC requires a function with the 'format' attribute to be variadic}}
return scanf(fmt, args...);
}
union bag {
bool b;
unsigned char uc;
signed char sc;
unsigned short us;
signed short ss;
unsigned int ui;
signed int si;
unsigned long ul;
signed long sl;
unsigned long long ull;
signed long long sll;
__fp16 f16;
float ff;
double fd;
long double fl;
};
void test(void) {
bag b;
// expected-warning@+2 {{format specifies type 'char *' but the argument has type 'bool *'}}
// expected-warning@+1 {{format specifies type 'unsigned char *' but the argument has type 'bool *'}}
scan("%hhi %hhu %hhi %hhu", &b.sc, &b.uc, &b.b, &b.b);
scan("%hi %hu", &b.ss, &b.us);
scan("%i %u", &b.si, &b.ui);
scan("%li %lu", &b.sl, &b.ul);
scan("%lli %llu", &b.sll, &b.ull);
scan("%f", &b.ff);
scan("%lf", &b.fd);
scan("%Lf", &b.fl);
// expected-warning@+4{{format specifies type 'short *' but the argument has type 'signed char *'}}
// expected-warning@+3{{format specifies type 'unsigned short *' but the argument has type 'unsigned char *'}}
// expected-warning@+2{{format specifies type 'short *' but the argument has type 'bool *'}}
// expected-warning@+1{{format specifies type 'unsigned short *' but the argument has type 'bool *'}}
scan("%hi %hu %hi %hu", &b.sc, &b.uc, &b.b, &b.b);
// expected-warning@+3{{format specifies type 'long *' but the argument has type 'short *'}}
// expected-warning@+2{{format specifies type 'char *' but the argument has type 'short *'}}
// expected-warning@+1{{format specifies type 'int *' but the argument has type 'short *'}}
scan("%hhi %i %li", &b.ss, &b.ss, &b.ss);
// expected-warning@+3{{format specifies type 'float *' but the argument has type '__fp16 *'}}
// expected-warning@+2{{format specifies type 'float *' but the argument has type 'double *'}}
// expected-warning@+1{{format specifies type 'float *' but the argument has type 'long double *'}}
scan("%f %f %f", &b.f16, &b.fd, &b.fl);
// expected-warning@+3{{format specifies type 'double *' but the argument has type '__fp16 *'}}
// expected-warning@+2{{format specifies type 'double *' but the argument has type 'float *'}}
// expected-warning@+1{{format specifies type 'double *' but the argument has type 'long double *'}}
scan("%lf %lf %lf", &b.f16, &b.ff, &b.fl);
// expected-warning@+3{{format specifies type 'long double *' but the argument has type '__fp16 *'}}
// expected-warning@+2{{format specifies type 'long double *' but the argument has type 'float *'}}
// expected-warning@+1{{format specifies type 'long double *' but the argument has type 'double *'}}
scan("%Lf %Lf %Lf", &b.f16, &b.ff, &b.fd);
}
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