wchar_t printf() format warning

[Joel Sherrill]

Hi

I am returning to this issue. This appears to be similar to the
intptr_t issue but with wchar_t. We get a printf() warning on
targets where wchar_t is defined is defined as "long int" and
not on targets where it is "int".  This appears to be because
of a conflict in the definition of __WINT_TYPE__ and
__WCHAR_TYPE__ by gcc.  I am open to suggestions on how
to resolve this.

$ sparc-rtems4.11-gcc -dM -E - </dev/null | grep WCHAR_TYPE
#define __WCHAR_TYPE__ long int
$ i386-rtems4.11-gcc -dM -E - </dev/null | grep WCHAR_TYPE
#define __WCHAR_TYPE__ int
$ sparc-rtems4.11-gcc -dM -E - </dev/null | grep WINT_TYPE
#define __WINT_TYPE__ unsigned int
$ i386-rtems4.11-gcc -dM -E - </dev/null | grep WINT_TYPE
#define __WINT_TYPE__ unsigned int


sparc generates this warning but i386 does not:

$ sparc-rtems4.11-gcc -Wall -c wc.c
wc.c: In function 'f':
wc.c:10:3: warning: format '%lc' expects argument of type 'wint_t', but
argument 4 has type 'wchar_t' [-Wformat=]
   (void)printf("%*s%lc\n", pad, "", wc);
   ^
wc.c:10:3: warning: format '%lc' expects argument of type 'wint_t', but
argument 4 has type 'wchar_t' [-Wformat=]


This is the test case:

=================
#include <stdio.h>
#include <wchar.h>

void f(void)
{

  int pad = 10;
  wchar_t wc = 'a';

  (void)printf("%*s%lc\n", pad, "", wc);
}
=================

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill@OARcorp.com        On-Line Applications Research
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