pg_atoi() does range check on int4 data only if

"HAS_LONG_LONG" is defined based on the assumption that
strtol() would return ERANGE if a platform does not support
64-bit integers. In current PostgreSQL 6.5 (and 6.4.2)
distribution, "HAS_LONG_LONG" is defined only if platform
is "alpha". (See include/port/alpha.h) I think the int4
range check should apply to linux_alpha as well. (I have
not tested yet but I guess this might be applicable to
newer Linux/i386 distributions which includes new GCC which
implements long int as 64-bit int.)

src/backend/utils/adt/numutils.c

@@ -10,7 +10,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/numutils.c,v 1.30 1999/05/25 16:12:14 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/numutils.c,v 1.31 1999/07/08 00:27:01 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -76,7 +76,7 @@ pg_atoi(char *s, int size, int c)
 	switch (size)
 	{
 		case sizeof(int32):
-#ifdef HAS_LONG_LONG
+#if defined(HAVE_LONG_INT_64) || defined(HAVE_LONG_LONG_INT_64)
 			/* won't get ERANGE on these with 64-bit longs... */
 			if (l < INT_MIN)
 			{
@@ -88,7 +88,7 @@ pg_atoi(char *s, int size, int c)
 				errno = ERANGE;
 				elog(ERROR, "pg_atoi: error reading \"%s\": %m", s);
 			}
-#endif	 /* HAS_LONG_LONG */
+#endif         /* HAVE_LONG_INT_64 or HAVE_LONG_LONG_INT_64 */
 			break;
 		case sizeof(int16):
 			if (l < SHRT_MIN)