clang/test/SemaCXX/printf-block.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs
   2 // RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs -std=c++98
   3 // RUN: %clang_cc1 -fsyntax-only -fblocks -Wformat -verify %s -Wno-error=non-pod-varargs -std=c++11
   4
   5 int (^block) (int, const char *,...) __attribute__((__format__(__printf__,2,3))) = ^ __attribute__((__format__(__printf__,2,3))) (int arg, const char *format,...) {return 5;};
   6
   7 class HasNoCStr {
   8   const char *str;
   9  public:
  10   HasNoCStr(const char *s): str(s) { }
  11   const char *not_c_str() {return str;}
  12 };
  13
  14 void test_block() {
  15   const char str[] = "test";
  16   HasNoCStr hncs(str);
  17   int n = 4;
  18   block(n, "%s %d", str, n); // no-warning
  19   block(n, "%s %s", hncs, n);
  20 #if __cplusplus <= 199711L // C++03 or earlier modes
  21   // expected-warning@-2{{cannot pass non-POD object of type 'HasNoCStr' to variadic block; expected type from format string was 'char *'}}
  22 #else
  23   // expected-warning@-4{{format specifies type 'char *' but the argument has type 'HasNoCStr'}}
  24 #endif
  25   // expected-warning@-6{{format specifies type 'char *' but the argument has type 'int'}}
  26 }