Add int2-to-int8 and int8-to-int2 conversion routines. Needed to avoid

breaking existing pg_dump scripts, which try to assign the result of
count(*) to an int2 variable.  catversion bumped.

diff --git a/src/backend/utils/adt/int8.c b/src/backend/utils/adt/int8.c
index 41a6061..b689cb7 100644 (file)
--- a/src/backend/utils/adt/int8.c
+++ b/src/backend/utils/adt/int8.c
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.34 2001/10/25 05:49:44 momjian Exp $
+ *       $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.35 2001/10/25 14:10:06 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -698,6 +698,29 @@ int84(PG_FUNCTION_ARGS)
 }
 
 Datum
+int28(PG_FUNCTION_ARGS)
+{
+       int16           val = PG_GETARG_INT16(0);
+
+       PG_RETURN_INT64((int64) val);
+}
+
+Datum
+int82(PG_FUNCTION_ARGS)
+{
+       int64           val = PG_GETARG_INT64(0);
+       int16           result;
+
+       result = (int16) val;
+
+       /* Test for overflow by reverse-conversion. */
+       if ((int64) result != val)
+               elog(ERROR, "int8 conversion to int2 is out of range");
+
+       PG_RETURN_INT16(result);
+}
+
+Datum
 i8tod(PG_FUNCTION_ARGS)
 {
        int64           val = PG_GETARG_INT64(0);

diff --git a/src/include/catalog/catversion.h b/src/include/catalog/catversion.h
index c51934d..dedd469 100644 (file)
--- a/src/include/catalog/catversion.h
+++ b/src/include/catalog/catversion.h
@@ -37,7 +37,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: catversion.h,v 1.100 2001/10/25 05:49:56 momjian Exp $
+ * $Id: catversion.h,v 1.101 2001/10/25 14:10:06 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -53,5 +53,5 @@
  */
 
 /*                                                     yyyymmddN */
-#define CATALOG_VERSION_NO     200110181
+#define CATALOG_VERSION_NO     200110251
 #endif

diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index ca53457..a504206 100644 (file)
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: pg_proc.h,v 1.218 2001/10/25 05:49:57 momjian Exp $
+ * $Id: pg_proc.h,v 1.219 2001/10/25 14:10:06 tgl Exp $
  *
  * NOTES
  *       The script catalog/genbki.sh reads this file and generates .bki
@@ -885,6 +885,11 @@ DESCR("convert int8 to float8");
 DATA(insert OID = 483 (  int8                     PGUID 12 f t t t 1 f  20 "701" 100 0 0 100  dtoi8 - ));
 DESCR("convert float8 to int8");
 
+DATA(insert OID = 714 (  int2                     PGUID 12 f t t t 1 f  21 "20" 100 0 0 100  int82 - ));
+DESCR("convert int8 to int2");
+DATA(insert OID = 754 (  int8                     PGUID 12 f t t t 1 f  20 "21" 100 0 0 100  int28 - ));
+DESCR("convert int2 to int8");
+
 /* OIDS 500 - 599 */
 
 /* OIDS 600 - 699 */

diff --git a/src/include/utils/int8.h b/src/include/utils/int8.h
index 161bb83..d083fb9 100644 (file)
--- a/src/include/utils/int8.h
+++ b/src/include/utils/int8.h
@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $Id: int8.h,v 1.28 2001/10/25 05:50:10 momjian Exp $
+ * $Id: int8.h,v 1.29 2001/10/25 14:10:07 tgl Exp $
  *
  * NOTES
  * These data types are supported on all 64-bit architectures, and may
@@ -98,6 +98,9 @@ extern Datum int48div(PG_FUNCTION_ARGS);
 extern Datum int48(PG_FUNCTION_ARGS);
 extern Datum int84(PG_FUNCTION_ARGS);
 
+extern Datum int28(PG_FUNCTION_ARGS);
+extern Datum int82(PG_FUNCTION_ARGS);
+
 extern Datum i8tod(PG_FUNCTION_ARGS);
 extern Datum dtoi8(PG_FUNCTION_ARGS);