3 files changed, 19 insertions, 8 deletions
diff --git a/X11/Xlibint.h b/X11/Xlibint.h
index f71692c5d..ff2975fe7 100644
--- a/X11/Xlibint.h
+++ b/X11/Xlibint.h
@@ -835,6 +835,15 @@ typedef struct _XExten {		/* private to extension mechanism */
 	struct _XExten *next_flush;	/* next in list of those with flushes */
 } _XExtension;
 
+/* Temporary definition until we can depend on an xproto release with it */
+#ifdef _X_COLD
+# define _XLIB_COLD _X_COLD
+#elif defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 403) /* 4.3+ */
+# define _XLIB_COLD __attribute__((__cold__))
+#else
+# define _XLIB_COLD /* nothing */
+#endif
+
 /* extension hooks */
 
 #ifdef DataRoutineIsProcedure
@@ -857,7 +866,14 @@ X11_EXTERN int (*_XErrorFunction)(
 extern void _XEatData(
     Display*		/* dpy */,
     unsigned long	/* n */
-);
+) _XLIB_COLD;
+extern void _XEatDataWords(
+    Display*		/* dpy */,
+    unsigned long	/* n */
+) _XLIB_COLD;
+#if defined(__SUNPRO_C) /* Studio compiler alternative to "cold" attribute */
+# pragma rarely_called(_XEatData, _XEatDataWords)
+#endif
 extern char *_XAllocScratch(
     Display*		/* dpy */,
     unsigned long	/* nbytes */
diff --git a/X11/extensions/extutil.h b/X11/extensions/extutil.h
index 29404d5ae..074cc183a 100644
--- a/X11/extensions/extutil.h
+++ b/X11/extensions/extutil.h
@@ -34,6 +34,7 @@ in this Software without prior written authorization from The Open Group.
 #ifndef _EXTUTIL_H_
 #define _EXTUTIL_H_
 
+#include <unistd.h>
 #include <X11/extensions/Xext.h>
 
 /*
@@ -178,7 +179,7 @@ char *proc (Display *dpy, int code, XExtCodes *codes, char *buf, int n) \
     code -= codes->first_error;  \
     if (code >= 0 && code < nerr) { \
 	char tmp[256]; \
-	sprintf (tmp, "%s.%d", extname, code); \
+	snprintf (tmp, sizeof(tmp), "%s.%d", extname, code);            \
 	XGetErrorDatabaseText (dpy, "XProtoError", tmp, errl[code], buf, n); \
 	return buf; \
     } \
diff --git a/X11/extensions/multibuf.h b/X11/extensions/multibuf.h
index 12fda357d..27165f08a 100644
--- a/X11/extensions/multibuf.h
+++ b/X11/extensions/multibuf.h
@@ -30,15 +30,9 @@ in this Software without prior written authorization from The Open Group.
 
 #include <X11/extensions/multibufconst.h>
 
-#if !defined(UNIXCPP) || defined(ANSICPP)
 #define MbufGetReq(name,req,info) GetReq (name, req); \
 	req->reqType = info->codes->major_opcode; \
 	req->mbufReqType = X_##name;
-#else
-#define MbufGetReq(name,req,info) GetReq (name, req); \
-	req->reqType = info->codes->major_opcode; \
-	req->mbufReqType = X_/**/name;
-#endif
 
 /*
  * Extra definitions that will only be needed in the client