Another net change, making it more bullet-proof, before could silently miss

data. so now we allocate enough space for the write to succeed fully.

svn path=/trunk/ices/; revision=4888

configure.in

@@ -100,6 +100,18 @@ AH_BOTTOM([
 #endif
 ])
 
+AC_MSG_CHECKING([how to copy va_list])
+    AC_TRY_LINK([#include <stdarg.h>], [va_list ap1, ap2; va_copy(ap1, ap2);],
+            AC_MSG_RESULT([va_copy]),
+            [ AH_TEMPLATE([va_copy], [define if va_copy is not available])
+            AC_TRY_LINK([#include <stdarg.h>], [va_list ap1, ap2; __va_copy(ap1, ap2);],
+                [ AC_DEFINE([va_copy], [__va_copy])
+                AC_MSG_RESULT([__va_copy])],
+                [ AC_DEFINE([va_copy(dest,src)], [memcpy(&dest,&src,sizeof(va_list))])
+                AC_MSG_RESULT([memcpy])]
+                )
+            ])
+
 dnl needs to be checked early on, so that additional libraries
 dnl don't trick the check
 ACX_PTHREAD([