I found the following bugs in the version 6.0 (dated 961229).

At least the first two should be fixed before the final release of 6.0.

1)      There is a mismatch between the type declared in the catalog for
        the input/output attributes of pg_type and the actual type of
        values stored in the table.  The type of typinput, typoutput,
        typsend and typreceive are declared oid (26) while the values are
        regproc (24).  The error was there also in previous versions but
        nobody noticed it until an Assert has been added in ExecEvalVar.
        The effect is that it is now impossible to replace the typoutput
        of existing data types with new procs.

2)      The identd hba fails after the first time because the data read
        from the identd socket is not zero-terminated and strlen reports
        an incorrect length if the stack contains garbage, which usually
        happens after the first connection has been made.

3)      The new initdb wants to create itself the data directory. This
        implies that the parent directory must be writable by postgres and
        this may not always be desirable.  A better solution would be to
        allow the directory to be created by root and then filled by initdb.
        It would also nice to have some reasonable default for PGLIB and
        PGDATA like the previous version did.  This applies also to the
        postmaster executable.

src/backend/libpq/hba.c

@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.13 1996/11/27 08:15:16 bryanh Exp $
+ *    $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.14 1997/01/10 17:39:29 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -500,7 +500,7 @@ ident(const struct in_addr remote_ip_addr, const struct in_addr local_ip_addr,
         *ident_failed = true;
       } else {
         char ident_response[80+IDENT_USERNAME_MAX];
-        rc = recv(sock_fd, ident_response, sizeof(ident_response), 0);
+        rc = recv(sock_fd, ident_response, sizeof(ident_response)-1, 0);
         if (rc < 0) {
           sprintf(PQerrormsg,
                   "Unable to receive response from Ident server "
@@ -515,6 +515,7 @@ ident(const struct in_addr remote_ip_addr, const struct in_addr local_ip_addr,
           *ident_failed = true;
         } else {
           bool error;  /* response from Ident is garbage. */
+          ident_response[rc] = '\0';
           interpret_ident_response(ident_response, &error, ident_username);
           *ident_failed = error;
         }

src/bin/initdb/initdb.sh

@@ -26,7 +26,7 @@
 #
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.20 1996/12/23 08:50:27 bryanh Exp $
+#    $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.21 1997/01/10 17:39:40 momjian Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -217,9 +217,9 @@ echo
 # umask must disallow access to group, other for files and dirs
 umask 077
 
-if [ -d "$PGDATA" ]; then
+if [ -f "$PGDATA/PG_VERSION" ]; then
     if [ $template_only -eq 0 ]; then
-        echo "$CMDNAME: error: Directory $PGDATA already exists."
+        echo "$CMDNAME: error: File $PGDATA/PG_VERSION already exists."
         echo "This probably means initdb has already been run and the "
         echo "database system already exists."
         echo 

src/include/catalog/pg_attribute.h

@@ -7,7 +7,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_attribute.h,v 1.4 1996/11/13 20:50:54 scrappy Exp $
+ * $Id: pg_attribute.h,v 1.5 1997/01/10 17:39:50 momjian Exp $
  *
  * NOTES
  *    the genbki.sh script reads this file and generates .bki
@@ -185,10 +185,10 @@ DATA(insert OID = 0 ( 1247 typisdefined     16 0 0 0  1   7 0 t t 0 0 -1 f c));
 DATA(insert OID = 0 ( 1247 typdelim         18 0 0 0  1   8 0 t t 0 0 -1 f c));
 DATA(insert OID = 0 ( 1247 typrelid         26 0 0 0  4   9 0 t t 0 0 -1 f i));
 DATA(insert OID = 0 ( 1247 typelem          26 0 0 0  4  10 0 t t 0 0 -1 f i));
-DATA(insert OID = 0 ( 1247 typinput         26 0 0 0  4  11 0 t t 0 0 -1 f i));
-DATA(insert OID = 0 ( 1247 typoutput        26 0 0 0  4  12 0 t t 0 0 -1 f i));
-DATA(insert OID = 0 ( 1247 typreceive       26 0 0 0  4  13 0 t t 0 0 -1 f i));
-DATA(insert OID = 0 ( 1247 typsend          26 0 0 0  4  14 0 t t 0 0 -1 f i));
+DATA(insert OID = 0 ( 1247 typinput         24 0 0 0  4  11 0 t t 0 0 -1 f i));
+DATA(insert OID = 0 ( 1247 typoutput        24 0 0 0  4  12 0 t t 0 0 -1 f i));
+DATA(insert OID = 0 ( 1247 typreceive       24 0 0 0  4  13 0 t t 0 0 -1 f i));
+DATA(insert OID = 0 ( 1247 typsend          24 0 0 0  4  14 0 t t 0 0 -1 f i));
 DATA(insert OID = 0 ( 1247 typalign         18 0 0 0  1  15 0 t t 0 0 -1 f c));
 DATA(insert OID = 0 ( 1247 typdefault       25 0 0 0 -1  16 0 f t 0 0 -1 f i));
 DATA(insert OID = 0 ( 1247 ctid             27 0 0 0  6  -1 0 f t 0 0 -1 f i));

src/interfaces/libpgtcl/Makefile

@@ -7,7 +7,7 @@
 #
 #
 # IDENTIFICATION
-#    $Header: /cvsroot/pgsql/src/interfaces/libpgtcl/Attic/Makefile,v 1.6 1996/11/13 10:35:31 bryanh Exp $
+#    $Header: /cvsroot/pgsql/src/interfaces/libpgtcl/Attic/Makefile,v 1.7 1997/01/10 17:40:07 momjian Exp $
 #
 #-------------------------------------------------------------------------
 
@@ -31,7 +31,16 @@ endif
 
 OBJS= pgtcl.o pgtclCmds.o pgtclId.o
 
-all: libpgtcl.a
+ifdef LINUX_ELF
+  shlib             := libpgtcl.so.1
+  install-shlib-dep := install-shlib
+  LDFLAGS           += -L ../libpq -lpq
+else
+  shlib             := 
+  install-shlib-dep :=
+endif
+
+all: libpgtcl.a $(shlib)
 
 libpgtcl.a: $(OBJS)
 ifdef MK_NO_LORDER
@@ -41,10 +50,15 @@ else
 endif
 	$(RANLIB) libpgtcl.a
 
+libpgtcl.so.1: $(OBJS)
+	$(CC) $(LDFLAGS) -shared $(OBJS) -o libpgtcl.so.1
+	rm -f libpgtcl.so
+	ln -s libpgtcl.so.1 libpgtcl.so
+
 .PHONY: beforeinstall-headers install-headers
 .PHONY: install install-libpgtcl
 
-install: install-headers install-libpgtcl
+install: install-headers install-libpgtcl $(install-shlib-dep)
 
 install-headers: beforeinstall-headers libpgtcl.h
 	$(INSTALL) $(INSTLOPTS) libpgtcl.h $(HEADERDIR)/libpgtcl.h
@@ -55,6 +69,12 @@ beforeinstall-headers:
 install-libpgtcl: libpgtcl.a
 	$(INSTALL) $(INSTL_LIB_OPTS) libpgtcl.a $(DESTDIR)$(LIBDIR)/libpgtcl.a
 
+install-shlib: libpgtcl.so.1
+	$(INSTALL) $(INSTL_LIB_OPTS) libpgtcl.so.1 \
+		$(DESTDIR)$(LIBDIR)/libpgtcl.so
+	rm -f $(DESTDIR)$(LIBDIR)/libpgtcl.so
+	ln -s libpgtcl.so.1 $(DESTDIR)$(LIBDIR)/libpgtcl.so
+
 .PHONY: clean
 clean: 
 	rm -f $(OBJS)