27 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs2// RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs -std=c++983// RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs -std=c++114 5int (^block) (int, const char *,...) __attribute__((__format__(__printf__,2,3))) = ^ __attribute__((__format__(__printf__,2,3))) (int arg, const char *format,...) {return 5;};6 7class HasNoCStr {8 const char *str;9 public:10 HasNoCStr(const char *s): str(s) { }11 const char *not_c_str() {return str;}12};13 14void test_block() {15 const char str[] = "test";16 HasNoCStr hncs(str);17 int n = 4;18 block(n, "%s %d", str, n); // no-warning19 block(n, "%s %s", hncs, n);20#if __cplusplus <= 199711L // C++03 or earlier modes21 // expected-warning@-2{{cannot pass non-POD object of type 'HasNoCStr' to variadic block; expected type from format string was 'char *'}}22#else23 // expected-warning@-4{{format specifies type 'char *' but the argument has type 'HasNoCStr'}}24#endif25 // expected-warning@-6{{format specifies type 'char *' but the argument has type 'int'}}26}27