Remove ACLDEBUG #define and associated code.

In the footsteps of aaf069aa, remove ACLDEBUG, which was the only
other remaining undocumented symbol in pg_config_manual.h.  The fact
that nobody had bothered to document it in seventeen years is a good
clue to its usefulness.  In practice, none of the tracing logic it
enabled would be of any value without additional effort.

Discussion: https://postgr.es/m/6631.1587565046@sss.pgh.pa.us

src/backend/catalog/aclchk.c

@@ -141,24 +141,6 @@ static void recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid
 										  Acl *new_acl);
 
 
-#ifdef ACLDEBUG
-static void
-dumpacl(Acl *acl)
-{
-	int			i;
-	AclItem    *aip;
-
-	elog(DEBUG2, "acl size = %d, # acls = %d",
-		 ACL_SIZE(acl), ACL_NUM(acl));
-	aip = ACL_DAT(acl);
-	for (i = 0; i < ACL_NUM(acl); ++i)
-		elog(DEBUG2, "	acl[%d]: %s", i,
-			 DatumGetCString(DirectFunctionCall1(aclitemout,
-												 PointerGetDatum(aip + i))));
-}
-#endif							/* ACLDEBUG */
-
-
 /*
  * If is_grant is true, adds the given privileges for the list of
  * grantees to the existing old_acl.  If is_grant is false, the
@@ -178,9 +160,6 @@ merge_acl_with_grant(Acl *old_acl, bool is_grant,
 
 	modechg = is_grant ? ACL_MODECHG_ADD : ACL_MODECHG_DEL;
 
-#ifdef ACLDEBUG
-	dumpacl(old_acl);
-#endif
 	new_acl = old_acl;
 
 	foreach(j, grantees)
@@ -219,10 +198,6 @@ merge_acl_with_grant(Acl *old_acl, bool is_grant,
 		/* avoid memory leak when there are many grantees */
 		pfree(new_acl);
 		new_acl = newer_acl;
-
-#ifdef ACLDEBUG
-		dumpacl(new_acl);
-#endif
 	}
 
 	return new_acl;
@@ -3861,21 +3836,13 @@ pg_class_aclmask(Oid table_oid, Oid roleid,
 		IsSystemClass(table_oid, classForm) &&
 		classForm->relkind != RELKIND_VIEW &&
 		!superuser_arg(roleid))
-	{
-#ifdef ACLDEBUG
-		elog(DEBUG2, "permission denied for system catalog update");
-#endif
 		mask &= ~(ACL_INSERT | ACL_UPDATE | ACL_DELETE | ACL_TRUNCATE | ACL_USAGE);
-	}
 
 	/*
 	 * Otherwise, superusers bypass all permission-checking.
 	 */
 	if (superuser_arg(roleid))
 	{
-#ifdef ACLDEBUG
-		elog(DEBUG2, "OID %u is superuser, home free", roleid);
-#endif
 		ReleaseSysCache(tuple);
 		return mask;
 	}

src/backend/utils/adt/acl.c

@@ -246,9 +246,6 @@ aclparse(const char *s, AclItem *aip)
 
 	Assert(s && aip);
 
-#ifdef ACLDEBUG
-	elog(LOG, "aclparse: input = \"%s\"", s);
-#endif
 	s = getid(s, name);
 	if (*s != '=')
 	{
@@ -358,11 +355,6 @@ aclparse(const char *s, AclItem *aip)
 
 	ACLITEM_SET_PRIVS_GOPTIONS(*aip, privs, goption);
 
-#ifdef ACLDEBUG
-	elog(LOG, "aclparse: correctly read [%u %x %x]",
-		 aip->ai_grantee, privs, goption);
-#endif
-
 	return s;
 }
 

src/include/pg_config_manual.h

@@ -348,8 +348,3 @@
  * Enable tracing of syncscan operations (see also the trace_syncscan GUC var).
  */
 /* #define TRACE_SYNCSCAN */
-
-/*
- * Other debug #defines (documentation, anyone?)
- */
-/* #define ACLDEBUG */