clang/test/Sema/format-strings-size_t.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
   2
   3 int printf(char const *, ...);
   4
   5 void test(void) {
   6   // size_t
   7   printf("%zu", (double)42); // expected-warning {{format specifies type 'size_t' (aka 'unsigned long') but the argument has type 'double'}}
   8
   9   // intmax_t / uintmax_t
  10   printf("%jd", (double)42); // expected-warning {{format specifies type 'intmax_t' (aka 'long') but the argument has type 'double'}}
  11   printf("%ju", (double)42); // expected-warning {{format specifies type 'uintmax_t' (aka 'unsigned long') but the argument has type 'double'}}
  12
  13   // ptrdiff_t
  14   printf("%td", (double)42); // expected-warning {{format specifies type 'ptrdiff_t' (aka 'long') but the argument has type 'double'}}
  15 }
  16
  17 void test_writeback(void) {
  18   printf("%jn", (long*)0); // no-warning
  19   printf("%jn", (unsigned long*)0); // no-warning
  20   printf("%jn", (int*)0); // expected-warning{{format specifies type 'intmax_t *' (aka 'long *') but the argument has type 'int *'}}
  21
  22   printf("%zn", (long*)0); // no-warning
  23   // FIXME: Warn about %zn with non-ssize_t argument.
  24
  25   printf("%tn", (long*)0); // no-warning
  26   printf("%tn", (unsigned long*)0); // no-warning
  27   printf("%tn", (int*)0); // expected-warning{{format specifies type 'ptrdiff_t *' (aka 'long *') but the argument has type 'int *'}}
  28 }