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-rw-r--r--gcc/ginclude/varargs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/ginclude/varargs.h b/gcc/ginclude/varargs.h
index ef2eeaffa10..9af23e9b183 100644
--- a/gcc/ginclude/varargs.h
+++ b/gcc/ginclude/varargs.h
@@ -73,7 +73,7 @@
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
-#ifdef __svr4__
+#if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX)
typedef char *__gnuc_va_list;
#else
typedef void *__gnuc_va_list;