format-strings-int-typedefs.c revision f4f0c6095d1f481b94c6821c65e3bf1c9df42af7 
1// RUN: %clang_cc1 -triple i386-apple-darwin9 -fsyntax-only -verify %s
2
3int printf(char const *, ...);
4
5void test(void) {
6  printf("%jd", 42.0); // expected-warning {{conversion specifies type 'intmax_t' (aka 'long long')}}
7  printf("%ju", 42.0); // expected-warning {{conversion specifies type 'uintmax_t' (aka 'unsigned long long')}}
8  printf("%zu", 42.0); // expected-warning {{conversion specifies type 'size_t' (aka 'unsigned long')}}
9  printf("%td", 42.0); // expected-warning {{conversion specifies type 'ptrdiff_t' (aka 'int')}}
10  printf("%lc", 42.0); // expected-warning {{conversion specifies type 'wint_t' (aka 'int')}}
11  printf("%ls", 42.0); // expected-warning {{conversion specifies type 'wchar_t *' (aka 'int *')}}
12  printf("%S", 42.0);  // expected-warning {{conversion specifies type 'wchar_t *' (aka 'int *')}}
13  printf("%C", 42.0);  // expected-warning {{conversion specifies type 'wchar_t' (aka 'int')}}
14
15
16  // typedef size_t et al. to something crazy.
17  typedef void *size_t;
18  typedef void *intmax_t;
19  typedef void *uintmax_t;
20  typedef void *ptrdiff_t;
21
22  // The warning still fires, because it checks the underlying type.
23  printf("%jd", (intmax_t)42); // expected-warning {{conversion specifies type 'intmax_t' (aka 'long long') but the argument has type 'intmax_t' (aka 'void *')}}
24  printf("%ju", (uintmax_t)42); // expected-warning {{conversion specifies type 'uintmax_t' (aka 'unsigned long long') but the argument has type 'uintmax_t' (aka 'void *')}}
25  printf("%zu", (size_t)42); // expected-warning {{conversion specifies type 'size_t' (aka 'unsigned long') but the argument has type 'size_t' (aka 'void *')}}
26  printf("%td", (ptrdiff_t)42); // expected-warning {{conversion specifies type 'ptrdiff_t' (aka 'int') but the argument has type 'ptrdiff_t' (aka 'void *')}}
27}
28