(va_start): Add call to builtin_next_arg.

From-SVN: r6856

gcc/ginclude/va-alpha.h

@@ -35,8 +35,11 @@ typedef struct {
 
 /* ANSI alternative.  */
 
+/* Call __builtin_next_arg even though we aren't using its value, so that
+   we can verify that firstarg is correct.  */
 #define va_start(pvar, firstarg)				\
-  ((pvar) = *(__gnuc_va_list *) __builtin_saveregs ())
+  (__builtin_next_arg (firstarg),				\
+   (pvar) = *(__gnuc_va_list *) __builtin_saveregs ())
 
 #endif /* _STDARG_H */
 

gcc/ginclude/va-clipper.h

@@ -22,9 +22,12 @@ typedef struct
 #define _VA_LIST_
 #define _SYS_INT_STDARG_H		/* acc compatibility */
 
+/* Call __builtin_next_arg even though we aren't using its value, so that
+   we can verify that LASTARG is correct.  */
 #ifdef _STDARG_H
 #define va_start(AP,LASTARG)			\
-  ((AP) = *(va_list *)__builtin_saveregs(),	\
+  (__builtin_next_arg (LASTARG),		\
+   (AP) = *(va_list *)__builtin_saveregs(),	\
    (AP).__va_num = __builtin_args_info (0),	\
    (AP).__va_ap += __builtin_args_info (1))
 #else

gcc/ginclude/va-m88k.h

@@ -19,8 +19,12 @@ typedef struct
 
 #ifdef _STDARG_H /* stdarg.h support */
 
+/* Call __builtin_next_arg even though we aren't using its value, so that
+   we can verify that LASTARG is correct.  */
 #if __GNUC__ > 1 /* GCC 2.0 and beyond */
-#define va_start(AP,LASTARG) ((AP) = *(__gnuc_va_list *)__builtin_saveregs())
+#define va_start(AP,LASTARG)				\
+ (__builtin_next_arg (LASTARG),				\
+  (AP) = *(__gnuc_va_list *)__builtin_saveregs())
 #else
 #define va_start(AP,LASTARG) \
   ( (AP).__va_reg = (int *) __builtin_saveregs2(0), \

gcc/ginclude/va-pa.h

@@ -21,8 +21,11 @@ typedef double *__gnuc_va_list;
   (AP) = (double *)((char *)(AP) + 4)
 #endif /* __GNUC__ > 1 */
 
+/* Call __builtin_next_arg even though we aren't using its value, so that
+   we can verify that LASTARG is correct.  */
 #ifdef _STDARG_H
-#define va_start(AP,LASTARG) __gnuc_va_start (AP)
+#define va_start(AP,LASTARG) \
+  (__builtin_next_arg (LASTARG), __gnuc_va_start (AP))
 #else
 /* The ... causes current_function_varargs to be set in cc1.  */
 #define va_dcl long va_alist; __va_ellipsis