diff --git a/src/backend/nodes/outfuncs.c b/src/backend/nodes/outfuncs.c
index f783a49ebac..5ac74460f28 100644
--- a/src/backend/nodes/outfuncs.c
+++ b/src/backend/nodes/outfuncs.c
@@ -89,7 +89,7 @@
 /* Write a Node field */
 #define WRITE_NODE_FIELD(fldname) \
 	(appendStringInfo(str, " :" CppAsString(fldname) " "), \
-	 _outNode(str, node->fldname))
+	 outNode(str, node->fldname))
 
 /* Write a bitmapset field */
 #define WRITE_BITMAPSET_FIELD(fldname) \
@@ -99,8 +99,6 @@
 
 #define booltostr(x)  ((x) ? "true" : "false")
 
-static void _outNode(StringInfo str, const void *obj);
-
 
 /*
  * _outToken
@@ -169,7 +167,7 @@ _outList(StringInfo str, const List *node)
 		 */
 		if (IsA(node, List))
 		{
-			_outNode(str, lfirst(lc));
+			outNode(str, lfirst(lc));
 			if (lnext(lc))
 				appendStringInfoChar(str, ' ');
 		}
@@ -214,8 +212,8 @@ outBitmapset(StringInfo str, const Bitmapset *bms)
 /*
  * Print the value of a Datum given its type.
  */
-static void
-_outDatum(StringInfo str, Datum value, int typlen, bool typbyval)
+void
+outDatum(StringInfo str, Datum value, int typlen, bool typbyval)
 {
 	Size		length,
 				i;
@@ -1009,7 +1007,7 @@ _outConst(StringInfo str, const Const *node)
 	if (node->constisnull)
 		appendStringInfoString(str, "<>");
 	else
-		_outDatum(str, node->constvalue, node->constlen, node->constbyval);
+		outDatum(str, node->constvalue, node->constlen, node->constbyval);
 }
 
 static void
@@ -3219,11 +3217,11 @@ _outConstraint(StringInfo str, const Constraint *node)
 
 
 /*
- * _outNode -
+ * outNode -
  *	  converts a Node into ascii string and append it to 'str'
  */
-static void
-_outNode(StringInfo str, const void *obj)
+void
+outNode(StringInfo str, const void *obj)
 {
 	if (obj == NULL)
 		appendStringInfoString(str, "<>");
@@ -3801,7 +3799,7 @@ _outNode(StringInfo str, const void *obj)
 
 				/*
 				 * This should be an ERROR, but it's too useful to be able to
-				 * dump structures that _outNode only understands part of.
+				 * dump structures that outNode only understands part of.
 				 */
 				elog(WARNING, "could not dump unrecognized node type: %d",
 					 (int) nodeTag(obj));
@@ -3822,6 +3820,6 @@ nodeToString(const void *obj)
 
 	/* see stringinfo.h for an explanation of this maneuver */
 	initStringInfo(&str);
-	_outNode(&str, obj);
+	outNode(&str, obj);
 	return str.data;
 }
diff --git a/src/backend/nodes/readfuncs.c b/src/backend/nodes/readfuncs.c
index 202e90abc53..8059594d3b7 100644
--- a/src/backend/nodes/readfuncs.c
+++ b/src/backend/nodes/readfuncs.c
@@ -172,12 +172,6 @@
 	((length) == 0 ? NULL : debackslash(token, length))
 
 
-static Datum readDatum(bool typbyval);
-static bool *readBoolCols(int numCols);
-static int *readIntCols(int numCols);
-static Oid *readOidCols(int numCols);
-static AttrNumber *readAttrNumberCols(int numCols);
-
 /*
  * _readBitmapset
  */
@@ -2499,7 +2493,7 @@ parseNodeString(void)
  * Datum.  The string representation embeds length info, but not byValue,
  * so we must be told that.
  */
-static Datum
+Datum
 readDatum(bool typbyval)
 {
 	Size		length,
@@ -2556,7 +2550,7 @@ readDatum(bool typbyval)
 /*
  * readAttrNumberCols
  */
-static AttrNumber *
+AttrNumber *
 readAttrNumberCols(int numCols)
 {
 	int			tokenLength,
@@ -2580,7 +2574,7 @@ readAttrNumberCols(int numCols)
 /*
  * readOidCols
  */
-static Oid *
+Oid *
 readOidCols(int numCols)
 {
 	int			tokenLength,
@@ -2604,7 +2598,7 @@ readOidCols(int numCols)
 /*
  * readIntCols
  */
-static int *
+int *
 readIntCols(int numCols)
 {
 	int			tokenLength,
@@ -2628,7 +2622,7 @@ readIntCols(int numCols)
 /*
  * readBoolCols
  */
-static bool *
+bool *
 readBoolCols(int numCols)
 {
 	int			tokenLength,
diff --git a/src/include/nodes/nodes.h b/src/include/nodes/nodes.h
index 84efa8e886d..ea65f2e453b 100644
--- a/src/include/nodes/nodes.h
+++ b/src/include/nodes/nodes.h
@@ -553,15 +553,23 @@ extern char *nodeToString(const void *obj);
 
 struct Bitmapset;				/* not to include bitmapset.h here */
 struct StringInfoData;			/* not to include stringinfo.h here */
+extern void outNode(struct StringInfoData *str, const void *obj);
 extern void outToken(struct StringInfoData *str, const char *s);
 extern void outBitmapset(struct StringInfoData *str,
 			 const struct Bitmapset *bms);
+extern void outDatum(struct StringInfoData *str, uintptr_t value,
+					 int typlen, bool typbyval);
 
 /*
  * nodes/{readfuncs.c,read.c}
  */
 extern void *stringToNode(char *str);
 extern struct Bitmapset *readBitmapset(void);
+extern uintptr_t readDatum(bool typbyval);
+extern bool *readBoolCols(int numCols);
+extern int *readIntCols(int numCols);
+extern Oid *readOidCols(int numCols);
+extern int16 *readAttrNumberCols(int numCols);
 
 /*
  * nodes/copyfuncs.c