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authorTheo de Raadt <deraadt@cvs.openbsd.org>1999-06-03 21:06:46 +0000
committerTheo de Raadt <deraadt@cvs.openbsd.org>1999-06-03 21:06:46 +0000
commitf6ac84d36e1eb6015d724332588fb97a5ed73988 (patch)
tree90d3f76e2bf1af4debce008a208fc77dc9471c4f /sys/arch/i386
parent9003a0ca394ab4411aebcb232bfa5d03673e04dd (diff)
use __builtin_next_arg() for va_start()
Diffstat (limited to 'sys/arch/i386')
-rw-r--r--sys/arch/i386/include/stdarg.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/arch/i386/include/stdarg.h b/sys/arch/i386/include/stdarg.h
index ddf7c81c083..204fd1cca87 100644
--- a/sys/arch/i386/include/stdarg.h
+++ b/sys/arch/i386/include/stdarg.h
@@ -45,8 +45,13 @@ typedef _BSD_VA_LIST_ va_list;
#define __va_size(type) \
(((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long))
+#ifdef __GNUC__
+#define va_start(ap, last) \
+ ((ap) = (va_list)__builtin_next_arg(last))
+#else
#define va_start(ap, last) \
((ap) = (va_list)&(last) + __va_size(last))
+#endif
#define va_arg(ap, type) \
(*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))