Hello, thank you for reviewing.

The attatched are the third version of this patch.

0001-Add-regrole_v3.patch
0002-Add-regnamespace_v3.patch

- Rearranged into regrole patch and regnamespace patch as seen
  above, each of them consists of changes for code, docs,
  regtests. regnamespace patch depends on the another patch.

- Removed the irrelevant change and corrected mistakes in
  comments.

- Renamed role_or_oid to role_name_or_oid in regrolein().

- Changed the example name for regrole in the docmentation to
  'smithee' as an impossible-in-reality-but-well-known name, from
  'john', the most common in US (according to Wikipedia).



At Tue, 24 Feb 2015 16:30:44 +0530, Jeevan Chalke 
<jeevan.cha...@enterprisedb.com> wrote in 
<CAM2+6=v-fwqfkwf0pi3dacq-zry5wxcplvluqfkf2mf57_6...@mail.gmail.com>
> I agree on Tom's concern on MVCC issue, but we already hit that when we
> introduced regclass and others. So I see no additional issue with these
> changes as such. About planner slowness, I guess updated documentation looks
> perfect for that.
> 
> So I went ahead reviewing these patches.
> 
> All patches are straight forward and since we have similar code already
> exists, I did not find any issue at code level. They are consistent with
> other
> functions.

One concern is about arbitrary allocation of OIDs for the new
objects - types, functions. They are isolated from other similar
reg* types, but there's no help for it without global renumbering
of static(system) OIDs.

> Patches applies with patch -p1. make, make install, make check has
> no issues. Testing was fine too.
> 
> However here are few review comments on the patches attached:
> 
> Review points on 0001-Add-regrole.patch
> ---
> 1.
> +#include "utils/acl.h"
> 
> Can you please add it at appropriate place as #include list is an ordered
> list

regrolein calls reg_role_oid in acl.c, which is declared in acl.h.

> 2.
> +    char       *role_or_oid = PG_GETARG_CSTRING(0);
> 
> Can we have variable named as role_name_or_oid, like other similar
> functions?

I might somehow have thought it a bit long. Fixed.

> 3.
> +    /*
> +     * Normal case: parse the name into components and see if it matches
> any
> +     * pg_role entries in the current search path.
> +     */
> 
> I believe, roles are never searched per search path. Thus need to update
> comments here.

Ouch. I forgot to edit it properly. I edit it. The correct
catalog name is pg_authid.

+       /* Normal case: see if the name matches any pg_authid entry. */

I also edited comments for regnamespacein.


> Review points on 0002-Add-regnamespace.patch
> ---
> 1.
> + * regnamespacein        - converts "classname" to class OID
> 
> Typos. Should be nspname instead of classname and namespase OID instead of
> class OID

Thank you for pointing out. I fixed the same mistake in
regrolein, p_ts_dict was there instead of pg_authid..  The names
of oid kinds appear in multiple forms, that is, oprname and
opr_name. Although I don't understand the reason, I followed the
convention.

> Review points on 0003-Check-new....patch
> ---
> 1.
> @@ -1860,6 +1860,7 @@ StoreAttrDefault(Relation rel, AttrNumber attnum,
>      Oid            attrdefOid;
>      ObjectAddress colobject,
>                  defobject;
> +    Oid            exprtype;
> 
> This seems unrelated. Please remove.

It's a trace of the previous code to ruling out the new oid
types. Removed.

> Apart from this, it will be good if you have ONLY two patches,
> (1) For regrole and (2) For regnamespace specific
> With all related changes into one patch. I mean, all role related changes
> i.e.
> 0001 + 0003 role related changes + 0004 role related changes and docs update
> AND
> 0002 + 0003 nsp related changes + 0004 nsp related changes

I prudently separated it since I wasn't confident on the
pertinence of ruling out. I rearranged them as your advise
including docs.

regards,

-- 
Kyotaro Horiguchi
NTT Open Source Software Center
>From 4d56a68e2bf2b7ee0da0447ad9f82f0b46277133 Mon Sep 17 00:00:00 2001
From: Kyotaro Horiguchi <horiguchi.kyot...@lab.ntt.co.jp>
Date: Wed, 18 Feb 2015 14:38:32 +0900
Subject: [PATCH 1/2] Add regrole

Add new OID aliass type regrole. The new type has the scope of whole
the database cluster so it doesn't behave as the same as the existing
OID alias types which have database scope, concerning object
dependency. To get rid of confusion, inhibit constants of the new type
from appearing where dependencies are made involving it.

Documentation about this new type is added and some existing
descriptions are modified according to the restriction of the
type. Addition to it, put a note about possible MVCC violation and
optimization issues, which are general over the all reg* types.
---
 doc/src/sgml/datatype.sgml            | 55 +++++++++++++-------
 src/backend/bootstrap/bootstrap.c     |  2 +
 src/backend/catalog/dependency.c      | 22 ++++++++
 src/backend/utils/adt/regproc.c       | 98 +++++++++++++++++++++++++++++++++++
 src/backend/utils/adt/selfuncs.c      |  2 +
 src/backend/utils/cache/catcache.c    |  1 +
 src/include/catalog/pg_cast.h         |  7 +++
 src/include/catalog/pg_proc.h         | 10 ++++
 src/include/catalog/pg_type.h         |  5 ++
 src/include/utils/builtins.h          |  5 ++
 src/test/regress/expected/regproc.out | 26 +++++++++-
 src/test/regress/sql/regproc.sql      |  7 +++
 12 files changed, 221 insertions(+), 19 deletions(-)

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index edf636b..095d624 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -4319,8 +4319,9 @@ SET xmloption TO { DOCUMENT | CONTENT };
     an object identifier.  There are also several alias types for
     <type>oid</>: <type>regproc</>, <type>regprocedure</>,
     <type>regoper</>, <type>regoperator</>, <type>regclass</>,
-    <type>regtype</>, <type>regconfig</>, and <type>regdictionary</>.
-    <xref linkend="datatype-oid-table"> shows an overview.
+    <type>regtype</>, <type>regrole</>, <type>regconfig</>, and
+    <type>regdictionary</>.  <xref linkend="datatype-oid-table"> shows
+    an overview.
    </para>
 
    <para>
@@ -4429,6 +4430,13 @@ SELECT * FROM pg_attribute
        </row>
 
        <row>
+        <entry><type>regrole</></entry>
+        <entry><structname>pg_authid</></entry>
+        <entry>role name</entry>
+        <entry><literal>smithee</></entry>
+       </row>
+
+       <row>
         <entry><type>regconfig</></entry>
         <entry><structname>pg_ts_config</></entry>
         <entry>text search configuration</entry>
@@ -4446,29 +4454,40 @@ SELECT * FROM pg_attribute
     </table>
 
    <para>
-    All of the OID alias types accept schema-qualified names, and will
-    display schema-qualified names on output if the object would not
-    be found in the current search path without being qualified.
-    The <type>regproc</> and <type>regoper</> alias types will only
-    accept input names that are unique (not overloaded), so they are
-    of limited use; for most uses <type>regprocedure</> or
+    All of the OID alias types for objects grouped by namespace accept
+    schema-qualified names, and will display schema-qualified names on output
+    if the object would not be found in the current search path without being
+    qualified.  The <type>regproc</> and <type>regoper</> alias types will
+    only accept input names that are unique (not overloaded), so they are of
+    limited use; for most uses <type>regprocedure</> or
     <type>regoperator</> are more appropriate.  For <type>regoperator</>,
     unary operators are identified by writing <literal>NONE</> for the unused
     operand.
    </para>
 
    <para>
-    An additional property of the OID alias types is the creation of
-    dependencies.  If a
-    constant of one of these types appears in a stored expression
-    (such as a column default expression or view), it creates a dependency
-    on the referenced object.  For example, if a column has a default
-    expression <literal>nextval('my_seq'::regclass)</>,
-    <productname>PostgreSQL</productname>
-    understands that the default expression depends on the sequence
-    <literal>my_seq</>; the system will not let the sequence be dropped
-    without first removing the default expression.
+    An additional property of most of the OID alias types is the creation of
+    dependencies.  If a constant of one of these types appears in a stored
+    expression (such as a column default expression or view), it creates a
+    dependency on the referenced object.  For example, if a column has
+    a default expression <literal>nextval('my_seq'::regclass)</>,
+    <productname>PostgreSQL</productname> understands that the default
+    expression depends on the sequence <literal>my_seq</>; the system
+    will not let the sequence be dropped without first removing the
+    default expression. <type>regrole</> is the exception for the
+    property. Constants of this type are not allowed in such
+    expressions.
+   </para>
+
+   <note>
+   <para>
+     The OID alias types don't sctrictly comply the transaction isolation
+     rules so do not use them where exact transaction isolation on the values
+     of theses types has a significance. Likewise, since they look as simple
+     constants to planner so you might get slower plans than the queries
+     joining the system tables correnspond to the OID types.
    </para>
+   </note>
 
    <para>
     Another identifier type used by the system is <type>xid</>, or transaction
diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index ad49964..c375c96 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -113,6 +113,8 @@ static const struct typinfo TypInfo[] = {
 	F_REGPROCIN, F_REGPROCOUT},
 	{"regtype", REGTYPEOID, 0, 4, true, 'i', 'p', InvalidOid,
 	F_REGTYPEIN, F_REGTYPEOUT},
+	{"regrole", REGROLEOID, 0, 4, true, 'i', 'p', InvalidOid,
+	F_REGROLEIN, F_REGROLEOUT},
 	{"text", TEXTOID, 0, -1, false, 'i', 'x', DEFAULT_COLLATION_OID,
 	F_TEXTIN, F_TEXTOUT},
 	{"oid", OIDOID, 0, 4, true, 'i', 'p', InvalidOid,
diff --git a/src/backend/catalog/dependency.c b/src/backend/catalog/dependency.c
index bacb242..c85f70a 100644
--- a/src/backend/catalog/dependency.c
+++ b/src/backend/catalog/dependency.c
@@ -1597,6 +1597,28 @@ find_expr_references_walker(Node *node,
 						add_object_address(OCLASS_TSDICT, objoid, 0,
 										   context->addrs);
 					break;
+
+				/*
+				 * Dependencies for regrole in expressions are not handled as
+				 * same as other reg* types. So explicitly inhibit the usage
+				 * to get rid of confusions.
+				 */
+				case REGROLEOID:
+				{
+					HeapTuple tt;
+					char *typename = "<unknown>";
+
+					tt = SearchSysCache1(TYPEOID, con->consttype);
+					if (HeapTupleIsValid(tt))
+						typename = pstrdup(NameStr(((Form_pg_type)
+													GETSTRUCT(tt))->typname));
+					ReleaseSysCache(tt);
+					ereport(ERROR,
+							(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
+							 errmsg("constant of the type \'%s\' cannot be used here",
+									typename)));
+				}
+				break;
 			}
 		}
 		return false;
diff --git a/src/backend/utils/adt/regproc.c b/src/backend/utils/adt/regproc.c
index 3d1bb32..a5196e7 100644
--- a/src/backend/utils/adt/regproc.c
+++ b/src/backend/utils/adt/regproc.c
@@ -40,6 +40,7 @@
 #include "utils/lsyscache.h"
 #include "utils/syscache.h"
 #include "utils/tqual.h"
+#include "utils/acl.h"
 
 static char *format_operator_internal(Oid operator_oid, bool force_qualify);
 static char *format_procedure_internal(Oid procedure_oid, bool force_qualify);
@@ -1553,6 +1554,103 @@ regdictionarysend(PG_FUNCTION_ARGS)
 	return oidsend(fcinfo);
 }
 
+/*
+ * regrolein	- converts "rolename" to role OID
+ *
+ * We also accept a numeric OID, for symmetry with the output routine.
+ *
+ * '-' signifies unknown (OID 0).  In all other cases, the input must
+ * match an existing pg_authid entry.
+ *
+ * This function is not needed in bootstrap mode, so we don't worry about
+ * making it work then.
+ */
+Datum
+regrolein(PG_FUNCTION_ARGS)
+{
+	char	   *role_name_or_oid = PG_GETARG_CSTRING(0);
+	Oid			result;
+
+	/* '-' ? */
+	if (strcmp(role_name_or_oid, "-") == 0)
+		PG_RETURN_OID(InvalidOid);
+
+	/* Numeric OID? */
+	if (role_name_or_oid[0] >= '0' &&
+		role_name_or_oid[0] <= '9' &&
+		strspn(role_name_or_oid, "0123456789") == strlen(role_name_or_oid))
+	{
+		result = DatumGetObjectId(DirectFunctionCall1(oidin,
+										 CStringGetDatum(role_name_or_oid)));
+		PG_RETURN_OID(result);
+	}
+
+	/* Normal case: see if the name matches any pg_authid entry. */
+	result = get_role_oid(role_name_or_oid, false);
+
+	PG_RETURN_OID(result);
+}
+
+/*
+ * to_regrole		- converts "rolename" to role OID
+ *
+ * If the name is not found, we return NULL.
+ */
+Datum
+to_regrole(PG_FUNCTION_ARGS)
+{
+	char	   *role_name = PG_GETARG_CSTRING(0);
+	Oid			result;
+
+	result = get_role_oid(role_name, true);
+	
+	if (OidIsValid(result))
+		PG_RETURN_OID(result);
+	else
+		PG_RETURN_NULL();
+}
+
+/*
+ * regroleout		- converts role OID to "role_name"
+ */
+Datum
+regroleout(PG_FUNCTION_ARGS)
+{
+	Oid			roleoid = PG_GETARG_OID(0);
+	char	   *result;
+
+
+	if (roleoid == InvalidOid)
+	{
+		result = pstrdup("-");
+		PG_RETURN_CSTRING(result);
+	}
+
+	result = GetUserNameFromId(roleoid);
+	PG_RETURN_CSTRING(result);
+}
+
+/*
+ *		regrolerecv	- converts external binary format to regrole
+ */
+Datum
+regrolerecv(PG_FUNCTION_ARGS)
+{
+	/* Exactly the same as oidrecv, so share code */
+	return oidrecv(fcinfo);
+}
+
+/*
+ *		regrolesend	- converts regrole to binary format
+ */
+Datum
+regrolesend(PG_FUNCTION_ARGS)
+{
+	/* Exactly the same as oidsend, so share code */
+	return oidsend(fcinfo);
+}
+
+
 
 /*
  * text_regclass: convert text to regclass
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c
index 1ba103c..529b0ed 100644
--- a/src/backend/utils/adt/selfuncs.c
+++ b/src/backend/utils/adt/selfuncs.c
@@ -3619,6 +3619,7 @@ convert_to_scalar(Datum value, Oid valuetypid, double *scaledvalue,
 		case REGTYPEOID:
 		case REGCONFIGOID:
 		case REGDICTIONARYOID:
+		case REGROLEOID:
 			*scaledvalue = convert_numeric_to_scalar(value, valuetypid);
 			*scaledlobound = convert_numeric_to_scalar(lobound, boundstypid);
 			*scaledhibound = convert_numeric_to_scalar(hibound, boundstypid);
@@ -3724,6 +3725,7 @@ convert_numeric_to_scalar(Datum value, Oid typid)
 		case REGTYPEOID:
 		case REGCONFIGOID:
 		case REGDICTIONARYOID:
+		case REGROLEOID:
 			/* we can treat OIDs as integers... */
 			return (double) DatumGetObjectId(value);
 	}
diff --git a/src/backend/utils/cache/catcache.c b/src/backend/utils/cache/catcache.c
index 1af43c6..9b7cc5e 100644
--- a/src/backend/utils/cache/catcache.c
+++ b/src/backend/utils/cache/catcache.c
@@ -150,6 +150,7 @@ GetCCHashEqFuncs(Oid keytype, PGFunction *hashfunc, RegProcedure *eqfunc)
 		case REGTYPEOID:
 		case REGCONFIGOID:
 		case REGDICTIONARYOID:
+		case REGROLEOID:
 			*hashfunc = hashoid;
 
 			*eqfunc = F_OIDEQ;
diff --git a/src/include/catalog/pg_cast.h b/src/include/catalog/pg_cast.h
index b314369..bc0faa8 100644
--- a/src/include/catalog/pg_cast.h
+++ b/src/include/catalog/pg_cast.h
@@ -210,6 +210,13 @@ DATA(insert ( 3769	 20 1288 a f ));
 DATA(insert ( 3769	 23    0 a b ));
 DATA(insert (	25 2205 1079 i f ));
 DATA(insert ( 1043 2205 1079 i f ));
+DATA(insert (	26 4096    0 i b ));
+DATA(insert ( 4096	 26    0 i b ));
+DATA(insert (	20 4096 1287 i f ));
+DATA(insert (	21 4096  313 i f ));
+DATA(insert (	23 4096    0 i b ));
+DATA(insert ( 4096	 20 1288 a f ));
+DATA(insert ( 4096	 23    0 a b ));
 
 /*
  * String category
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index 4268b99..2aa7c33 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -3438,6 +3438,12 @@ DESCR("convert type name to regtype");
 DATA(insert OID = 1079 (  regclass			PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 2205 "25" _null_ _null_ _null_ _null_	text_regclass _null_ _null_ _null_ ));
 DESCR("convert text to regclass");
 
+DATA(insert OID = 4091 (  regrolein			PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 4096 "2275" _null_ _null_ _null_ _null_ regrolein _null_ _null_ _null_ ));
+DESCR("I/O");
+DATA(insert OID = 4092 (  regroleout		PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 2275 "4096" _null_ _null_ _null_ _null_ regroleout _null_ _null_ _null_ ));
+DESCR("I/O");
+DATA(insert OID = 4093 (  to_regrole		PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 4096 "2275" _null_ _null_ _null_ _null_ to_regrole _null_ _null_ _null_ ));
+DESCR("convert role name to regrole");
 DATA(insert OID = 2246 ( fmgr_internal_validator PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 2278 "26" _null_ _null_ _null_ _null_ fmgr_internal_validator _null_ _null_ _null_ ));
 DESCR("(internal)");
 DATA(insert OID = 2247 ( fmgr_c_validator	PGNSP PGUID 12 1 0 0 0 f f f f t f s 1 0 2278 "26" _null_ _null_ _null_ _null_ fmgr_c_validator _null_ _null_ _null_ ));
@@ -3833,6 +3839,10 @@ DATA(insert OID = 2454 (  regtyperecv		   PGNSP PGUID 12 1 0 0 0 f f f f t f i 1
 DESCR("I/O");
 DATA(insert OID = 2455 (  regtypesend		   PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 17 "2206" _null_ _null_ _null_ _null_	regtypesend _null_ _null_ _null_ ));
 DESCR("I/O");
+DATA(insert OID = 4094 (  regrolerecv	  	   PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 4096 "2281" _null_ _null_ _null_ _null_ regrolerecv _null_ _null_ _null_ ));
+DESCR("I/O");
+DATA(insert OID = 4095 (  regrolesend	       PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 17 "4096" _null_ _null_ _null_ _null_	regrolesend _null_ _null_ _null_ ));
+DESCR("I/O");
 DATA(insert OID = 2456 (  bit_recv			   PGNSP PGUID 12 1 0 0 0 f f f f t f i 3 0 1560 "2281 26 23" _null_ _null_ _null_ _null_  bit_recv _null_ _null_ _null_ ));
 DESCR("I/O");
 DATA(insert OID = 2457 (  bit_send			   PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 17 "1560" _null_ _null_ _null_ _null_	bit_send _null_ _null_ _null_ ));
diff --git a/src/include/catalog/pg_type.h b/src/include/catalog/pg_type.h
index 0a900dd..1430bc1 100644
--- a/src/include/catalog/pg_type.h
+++ b/src/include/catalog/pg_type.h
@@ -564,12 +564,17 @@ DATA(insert OID = 2206 ( regtype	   PGNSP PGUID	4 t b N f t \054 0	 0 2211 regty
 DESCR("registered type");
 #define REGTYPEOID		2206
 
+DATA(insert OID = 4096 ( regrole       PGNSP PGUID	4 t b N f t \054 0	 0 4097 regrolein regroleout regrolerecv regrolesend - - - i p f 0 -1 0 0 _null_ _null_ _null_ ));
+DESCR("registered role");
+#define REGROLEOID		4096
+
 DATA(insert OID = 2207 ( _regprocedure PGNSP PGUID -1 f b A f t \054 0 2202 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 DATA(insert OID = 2208 ( _regoper	   PGNSP PGUID -1 f b A f t \054 0 2203 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 DATA(insert OID = 2209 ( _regoperator  PGNSP PGUID -1 f b A f t \054 0 2204 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 DATA(insert OID = 2210 ( _regclass	   PGNSP PGUID -1 f b A f t \054 0 2205 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 DATA(insert OID = 2211 ( _regtype	   PGNSP PGUID -1 f b A f t \054 0 2206 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 #define REGTYPEARRAYOID 2211
+DATA(insert OID = 4097 ( _regrole      PGNSP PGUID -1 f b A f t \054 0 4096 0 array_in array_out array_recv array_send - - array_typanalyze i x f 0 -1 0 0 _null_ _null_ _null_ ));
 
 /* uuid */
 DATA(insert OID = 2950 ( uuid			PGNSP PGUID 16 f b U f t \054 0 0 2951 uuid_in uuid_out uuid_recv uuid_send - - - c p f 0 -1 0 0 _null_ _null_ _null_ ));
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index bc4517d..0e1e99e 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -630,6 +630,11 @@ extern Datum regtypeout(PG_FUNCTION_ARGS);
 extern Datum regtyperecv(PG_FUNCTION_ARGS);
 extern Datum regtypesend(PG_FUNCTION_ARGS);
 extern Datum to_regtype(PG_FUNCTION_ARGS);
+extern Datum regrolein(PG_FUNCTION_ARGS);
+extern Datum regroleout(PG_FUNCTION_ARGS);
+extern Datum regrolerecv(PG_FUNCTION_ARGS);
+extern Datum regrolesend(PG_FUNCTION_ARGS);
+extern Datum to_regrole(PG_FUNCTION_ARGS);
 extern Datum regconfigin(PG_FUNCTION_ARGS);
 extern Datum regconfigout(PG_FUNCTION_ARGS);
 extern Datum regconfigrecv(PG_FUNCTION_ARGS);
diff --git a/src/test/regress/expected/regproc.out b/src/test/regress/expected/regproc.out
index 3342129..beda8ec 100644
--- a/src/test/regress/expected/regproc.out
+++ b/src/test/regress/expected/regproc.out
@@ -2,6 +2,7 @@
 -- regproc
 --
 /* If objects exist, return oids */
+CREATE ROLE regtestrole;
 -- without schemaname
 SELECT regoper('||/');
  regoper 
@@ -39,6 +40,12 @@ SELECT regtype('int4');
  integer
 (1 row)
 
+SELECT regrole('regtestrole');
+   regrole   
+-------------
+ regtestrole
+(1 row)
+
 SELECT to_regoper('||/');
  to_regoper 
 ------------
@@ -75,6 +82,12 @@ SELECT to_regtype('int4');
  integer
 (1 row)
 
+SELECT to_regrole('regtestrole');
+ to_regrole  
+-------------
+ regtestrole
+(1 row)
+
 -- with schemaname
 SELECT regoper('pg_catalog.||/');
  regoper 
@@ -143,10 +156,11 @@ SELECT to_regtype('pg_catalog.int4');
 (1 row)
 
 /* If objects don't exist, raise errors. */
+DROP ROLE regtestrole;
 -- without schemaname
 SELECT regoper('||//');
 ERROR:  operator does not exist: ||//
-LINE 3: SELECT regoper('||//');
+LINE 1: SELECT regoper('||//');
                        ^
 SELECT regoperator('++(int4,int4)');
 ERROR:  operator does not exist: ++(int4,int4)
@@ -168,6 +182,10 @@ SELECT regtype('int3');
 ERROR:  type "int3" does not exist
 LINE 1: SELECT regtype('int3');
                        ^
+SELECT regrole('regtestrole');
+ERROR:  role "regtestrole" does not exist
+LINE 1: SELECT regrole('regtestrole');
+                       ^
 -- with schemaname
 SELECT regoper('ng_catalog.||/');
 ERROR:  schema "ng_catalog" does not exist
@@ -231,6 +249,12 @@ SELECT to_regtype('int3');
  
 (1 row)
 
+SELECT to_regrole('regtestrole');
+ to_regrole 
+------------
+ 
+(1 row)
+
 -- with schemaname
 SELECT to_regoper('ng_catalog.||/');
  to_regoper 
diff --git a/src/test/regress/sql/regproc.sql b/src/test/regress/sql/regproc.sql
index cc90838..bc77c67 100644
--- a/src/test/regress/sql/regproc.sql
+++ b/src/test/regress/sql/regproc.sql
@@ -4,6 +4,7 @@
 
 /* If objects exist, return oids */
 
+CREATE ROLE regtestrole;
 -- without schemaname
 
 SELECT regoper('||/');
@@ -12,6 +13,7 @@ SELECT regproc('now');
 SELECT regprocedure('abs(numeric)');
 SELECT regclass('pg_class');
 SELECT regtype('int4');
+SELECT regrole('regtestrole');
 
 SELECT to_regoper('||/');
 SELECT to_regoperator('+(int4,int4)');
@@ -19,6 +21,7 @@ SELECT to_regproc('now');
 SELECT to_regprocedure('abs(numeric)');
 SELECT to_regclass('pg_class');
 SELECT to_regtype('int4');
+SELECT to_regrole('regtestrole');
 
 -- with schemaname
 
@@ -37,6 +40,8 @@ SELECT to_regtype('pg_catalog.int4');
 
 /* If objects don't exist, raise errors. */
 
+DROP ROLE regtestrole;
+
 -- without schemaname
 
 SELECT regoper('||//');
@@ -45,6 +50,7 @@ SELECT regproc('know');
 SELECT regprocedure('absinthe(numeric)');
 SELECT regclass('pg_classes');
 SELECT regtype('int3');
+SELECT regrole('regtestrole');
 
 -- with schemaname
 
@@ -65,6 +71,7 @@ SELECT to_regproc('know');
 SELECT to_regprocedure('absinthe(numeric)');
 SELECT to_regclass('pg_classes');
 SELECT to_regtype('int3');
+SELECT to_regrole('regtestrole');
 
 -- with schemaname
 
-- 
2.1.0.GIT

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