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Win32 can't catch the exception thrown by INT_MIN / -1 or INT_MIN * -1,

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so on that platform we test for those before the computation and throw
an "out of range" error.

Backpatch to 8.1.X.
This commit is contained in:
Bruce Momjian
2006-06-12 16:09:39 +00:00
parent b45f5bb726
commit f7a0b645f5
1 changed files with 23 additions and 1 deletions
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24
src/backend/utils/adt/int.c
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@ -8,7 +8,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/adt/int.c,v 1.68.2.1 2006/03/02 21:13:11 tgl Exp $ * $PostgreSQL: pgsql/src/backend/utils/adt/int.c,v 1.68.2.2 2006/06/12 16:09:39 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -742,6 +742,17 @@ int4mul(PG_FUNCTION_ARGS)
int32 arg2 = PG_GETARG_INT32(1); int32 arg2 = PG_GETARG_INT32(1);
int32 result; 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; result = arg1 * arg2;
/* /*
@ -777,6 +788,17 @@ int4div(PG_FUNCTION_ARGS)
(errcode(ERRCODE_DIVISION_BY_ZERO), (errcode(ERRCODE_DIVISION_BY_ZERO),
errmsg("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; result = arg1 / arg2;
/* /*