#ifdef NDEBUG
#define switch_malloc(ptr, len) (void)( (!!(ptr = malloc(len))) || (fprintf(stderr,"ABORT! Malloc failure at: %s:%d", __FILE__, __LINE__),abort(), 0), ptr )
#define switch_zmalloc(ptr, len) (void)( (!!(ptr = calloc(1, (len)))) || (fprintf(stderr,"ABORT! Malloc failure at: %s:%d", __FILE__, __LINE__),abort(), 0), ptr)
+#if (_MSC_VER >= 1500) // VC9+
+#define switch_strdup(ptr, s) (void)( (!!(ptr = _strdup(s))) || (fprintf(stderr,"ABORT! Malloc failure at: %s:%d", __FILE__, __LINE__),abort(), 0), ptr)
+#else
#define switch_strdup(ptr, s) (void)( (!!(ptr = strdup(s))) || (fprintf(stderr,"ABORT! Malloc failure at: %s:%d", __FILE__, __LINE__),abort(), 0), ptr)
+#endif
#else
#if (_MSC_VER >= 1500) // VC9+
#define switch_malloc(ptr, len) (void)(assert(((ptr) = malloc((len)))),ptr);__analysis_assume( ptr )