I just discovered, that there is missing a const when passing a buffer

to  PQescapeBytea and PQunescapeBytea. I fixed it and tried to create a
usable  diff (I'm not so familar to diff).

Tommi M?kitalo

doc/src/sgml/libpq.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.99 2002/11/08 05:03:11 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/libpq.sgml,v 1.100 2002/11/10 00:14:22 momjian Exp $
 -->
 
  <chapter id="libpq">
@@ -926,7 +926,7 @@ strings overlap.
    <function>PQescapeBytea</function>
    Escapes a binary string (<type>bytea</type> type) for use within an SQL query.
    <synopsis>
-    unsigned char *PQescapeBytea(unsigned char *from,
+    unsigned char *PQescapeBytea(const unsigned char *from,
                                          size_t from_length,
                                          size_t *to_length);
    </synopsis>
@@ -970,7 +970,7 @@ strings overlap.
    Converts an escaped string representation of binary data into binary
    data - the reverse of <function>PQescapeBytea</function>.
    <synopsis>
-    unsigned char *PQunescapeBytea(unsigned char *from, size_t *to_length);
+    unsigned char *PQunescapeBytea(const unsigned char *from, size_t *to_length);
    </synopsis>
 
    The <parameter>from</parameter> parameter points to an escaped string

src/interfaces/libpq/fe-exec.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.122 2002/09/04 20:31:47 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.123 2002/11/10 00:14:22 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -118,9 +118,9 @@ PQescapeString(char *to, const char *from, size_t length)
  *		anything >= 0x80 ---> \\ooo (where ooo is an octal expression)
  */
 unsigned char *
-PQescapeBytea(unsigned char *bintext, size_t binlen, size_t *bytealen)
+PQescapeBytea(const unsigned char *bintext, size_t binlen, size_t *bytealen)
 {
-	unsigned char *vp;
+	const unsigned char *vp;
 	unsigned char *rp;
 	unsigned char *result;
 	size_t		i;
@@ -202,12 +202,12 @@ PQescapeBytea(unsigned char *bintext, size_t binlen, size_t *bytealen)
  *		6	\\
  */
 unsigned char *
-PQunescapeBytea(unsigned char *strtext, size_t *retbuflen)
+PQunescapeBytea(const unsigned char *strtext, size_t *retbuflen)
 {
 	size_t		buflen;
 	unsigned char *buffer,
-			   *sp,
 			   *bp;
+	const unsigned char *sp;
 	unsigned int state = 0;
 
 	if (strtext == NULL)

src/interfaces/libpq/libpq-fe.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: libpq-fe.h,v 1.86 2002/09/04 20:31:47 momjian Exp $
+ * $Id: libpq-fe.h,v 1.87 2002/11/10 00:14:22 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -249,9 +249,9 @@ extern PQnoticeProcessor PQsetNoticeProcessor(PGconn *conn,
 
 /* Quoting strings before inclusion in queries. */
 extern size_t PQescapeString(char *to, const char *from, size_t length);
-extern unsigned char *PQescapeBytea(unsigned char *bintext, size_t binlen,
+extern unsigned char *PQescapeBytea(const unsigned char *bintext, size_t binlen,
 			  size_t *bytealen);
-extern unsigned char *PQunescapeBytea(unsigned char *strtext,
+extern unsigned char *PQunescapeBytea(const unsigned char *strtext,
 				size_t *retbuflen);