Small misc tidyup patch

Hi,

Here's a silly patch, which does the following:

 * One unnecessary sprintf becomes strcpy.
 * unsigned long is 64 bit on alpha.  Extra
   paranoia.
 * Minor optimisation to strdup.

Matthew.


diff -ruN postgresql-7.1beta5-clean/src/backend/access/transam/xid.c
postgresql-7.1beta5/src/backend/access/transam/xid.c
--- postgresql-7.1beta5-clean/src/backend/access/transam/xid.c    Mon Jan 29 02:53:36 2001
+++ postgresql-7.1beta5/src/backend/access/transam/xid.c    Sat Feb 24 15:16:36 2001
@@ -49,10 +49,10 @@
 xidout(PG_FUNCTION_ARGS)
 {
     TransactionId transactionId = PG_GETARG_TRANSACTIONID(0);
-    /* maximum 32 bit unsigned integer representation takes 10 chars */
-    char       *representation = palloc(11);
+    /* maximum 64 bit unsigned long representation takes 20 chars */
+    char       *representation = palloc(21);

-    snprintf(representation, 11, "%lu", (unsigned long) transactionId);
+    snprintf(representation, 21, "%lu", (unsigned long) transactionId);

     PG_RETURN_CSTRING(representation);
 }
diff -ruN postgresql-7.1beta5-clean/src/backend/access/transam/xlogutils.c
postgresql-7.1beta5/src/backend/access/transam/xlogutils.c
--- postgresql-7.1beta5-clean/src/backend/access/transam/xlogutils.c    Fri Feb 23 18:12:00 2001
+++ postgresql-7.1beta5/src/backend/access/transam/xlogutils.c    Sat Feb 24 15:16:36 2001
@@ -166,7 +166,7 @@
     logRelation->rd_rel = (Form_pg_class) malloc(sizeof(FormData_pg_class));
     memset(logRelation->rd_rel, 0, sizeof(FormData_pg_class));

-    sprintf(RelationGetPhysicalRelationName(logRelation), "pg_log");
+    strcpy(RelationGetPhysicalRelationName(logRelation), "pg_log");
     logRelation->rd_node.tblNode = InvalidOid;
     logRelation->rd_node.relNode = RelOid_pg_log;
     logRelation->rd_fd = -1;
diff -ruN postgresql-7.1beta5-clean/src/utils/strdup.c postgresql-7.1beta5/src/utils/strdup.c
--- postgresql-7.1beta5-clean/src/utils/strdup.c    Mon Jan 29 02:53:58 2001
+++ postgresql-7.1beta5/src/utils/strdup.c    Sat Feb 24 15:16:36 2001
@@ -20,7 +20,11 @@
 strdup(char const * string)
 {
     char       *nstr;
+    size_t        len;

-    nstr = strcpy((char *) malloc(strlen(string) + 1), string);
+    len = strlen(string) + 1;
+    nstr = malloc(len);
+    if (nstr)
+        memcpy(nstr, string, len);
     return nstr;
 }