21.c.strings.stdcxx-843.cpp

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#include <cassert>
#include <cwchar>
 
#ifndef _RWSTD_MBSTATE_T_SIZE
   // explicitly include our own <rw/_defs.h> in case neither
   // of the two above is ours (i.e., we're using the compiler's
   // C++ C headers)
#  include <rw/_defs.h>
#endif   // _RWSTD_MBSTATE_T_SIZE
 
 
// known mbstate_t sizes on major platforms
#ifdef _RWSTD_OS_AIX
#  define KNOWN_SIZE   sizeof(long)
#elif defined _RWSTD_OS_HP_UX
#  define KNOWN_SIZE   8
#elif defined _RWSTD_OS_FREEBSD
#  define KNOWN_SIZE   128
#elif defined _RWSTD_OS_IRIX64
#  define KNOWN_SIZE   1
#elif defined _RWSTD_OS_LINUX
#  define KNOWN_SIZE   8
#elif defined _RWSTD_OS_OSF1
#  define KNOWN_SIZE   24
#elif defined _RWSTD_OS_SUNOS
#  define KNOWN_SIZE   (sizeof(long) == 8 ? 32 : 24)
#elif defined _RWSTD_OS_WINDOWS
#  define KNOWN_SIZE   4
#endif
 
 
int main ()
{
    // verify that the size is the same as what was detectected
    // during configuration
    assert (sizeof (std::mbstate_t) == _RWSTD_MBSTATE_T_SIZE);
 
#ifdef KNOWN_SIZE
 
    // on known platforms verify that the actual size matches
    // the size known on that platform
    assert (sizeof (std::mbstate_t) == KNOWN_SIZE);
 
#endif   // KNOWN_SIZE
 
    return 0;
}