#if defined(__z80) || defined(__gbz80) || defined(__hc08)
typedef unsigned char * va_list;
-#define va_start(marker, last) { marker = (unsigned char *)&last + sizeof(last); }
+#define va_start(marker, last) { marker = (va_list)&last + sizeof(last); }
#define va_arg(marker, type) *((type *)((marker += sizeof(type)) - sizeof(type)))
#elif defined(__ds390) || defined(__ds400)
typedef unsigned char * va_list;
-#define va_start(marker, first) { marker = &first; }
+#define va_start(marker, first) { marker = (va_list)&first; }
#define va_arg(marker, type) *((type *)(marker -= sizeof(type)))
#elif defined(SDCC_USE_XSTACK)
typedef unsigned char __pdata * va_list;
-#define va_start(marker, first) { marker = (va_list)((char __pdata *)&first); }
+#define va_start(marker, first) { marker = (va_list)&first; }
#define va_arg(marker, type) *((type __pdata *)(marker -= sizeof(type)))
#else
typedef unsigned char __data * va_list;
-#define va_start(marker, first) { marker = (va_list) ((char __data * )&first); }
+#define va_start(marker, first) { marker = (va_list)&first; }
#define va_arg(marker, type) *((type __data * )(marker -= sizeof(type)))
#endif