From: Bruce Momjian <bruce@momjian.us>
Date: Mon, 12 Jun 2006 16:09:11 +0000 (+0000)
Subject: Win32 can't catch the exception thrown by INT_MIN / -1 or INT_MIN * -1,
X-Git-Tag: REL9_0_0~7761
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=9fc6f4e1ae107f44807c4906105e1f7eb052ecb1;p=pg-rex%2Fsyncrep.git

Win32 can't catch the exception thrown by INT_MIN / -1 or INT_MIN * -1,
so on that platform we test for those before the computation and throw
an "out of range" error.

Backpatch to 8.1.X.
---

diff --git a/src/backend/utils/adt/int.c b/src/backend/utils/adt/int.c
index de59276ecb..6289c538a3 100644
--- a/src/backend/utils/adt/int.c
+++ b/src/backend/utils/adt/int.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/adt/int.c,v 1.72 2006/03/11 01:19:22 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/adt/int.c,v 1.73 2006/06/12 16:09:11 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -735,6 +735,17 @@ int4mul(PG_FUNCTION_ARGS)
 	int32		arg2 = PG_GETARG_INT32(1);
 	int32		result;
 
+#ifdef WIN32
+	/*
+	 *	Win32 doesn't throw a catchable exception for
+	 *	SELECT -2147483648 /* INT_MIN */ * (-1);
+	 */
+	if (arg2 == -1 && arg1 == INT_MIN)
+		ereport(ERROR,
+				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+				 errmsg("integer out of range")));
+#endif
+
 	result = arg1 * arg2;
 
 	/*
@@ -770,6 +781,17 @@ int4div(PG_FUNCTION_ARGS)
 				(errcode(ERRCODE_DIVISION_BY_ZERO),
 				 errmsg("division by zero")));
 
+#ifdef WIN32
+	/*
+	 *	Win32 doesn't throw a catchable exception for
+	 *	SELECT -2147483648 /* INT_MIN */ / (-1);
+	 */
+	if (arg2 == -1 && arg1 == INT_MIN)
+		ereport(ERROR,
+				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+				 errmsg("integer out of range")));
+#endif
+
 	result = arg1 / arg2;
 
 	/*