1 files changed, 14 insertions, 0 deletions
diff --git a/src/XpExtUtil.h b/src/XpExtUtil.h
index d479a95..1889825 100644
--- a/src/XpExtUtil.h
+++ b/src/XpExtUtil.h
@@ -48,6 +48,20 @@ extern char *_xpstrdup(
     const char * /* str */
 );
 
+#ifndef HAVE__XEATDATAWORDS
+#include <X11/Xmd.h>  /* for LONG64 on 64-bit platforms */
+#include <limits.h>
+
+static inline void _XEatDataWords(Display *dpy, unsigned long n)
+{
+# ifndef LONG64
+    if (n >= (ULONG_MAX >> 2))
+        _XIOError(dpy);
+# endif
+    _XEatData (dpy, n << 2);
+}
+#endif
+
 _XFUNCPROTOEND
 
 #endif /* _XPEXTUTIL_H */