1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
// RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs
int (^block) (int, const char *,...) __attribute__((__format__(__printf__,2,3))) = ^ __attribute__((__format__(__printf__,2,3))) (int arg, const char *format,...) {return 5;};
class HasNoCStr {
const char *str;
public:
HasNoCStr(const char *s): str(s) { }
const char *not_c_str() {return str;}
};
void test_block() {
const char str[] = "test";
HasNoCStr hncs(str);
int n = 4;
block(n, "%s %d", str, n); // no-warning
block(n, "%s %s", hncs, n); // expected-warning{{cannot pass non-POD object of type 'HasNoCStr' to variadic block; expected type from format string was 'char *'}} expected-warning{{format specifies type 'char *' but the argument has type 'int'}}
}
|
