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Defend against function calls with more than 8 arguments (code

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used to overrun its fixed-size arrays before detecting error; not cool).
Also, replace uses of magic constant '8' with 'MAXFARGS'.
This commit is contained in:
Tom Lane
1999-06-17 22:21:41 +00:00
parent 4c65382596
commit 5f74d499bf
4 changed files with 33 additions and 23 deletions
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7
src/backend/parser/parse_coerce.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.17 1999/05/29 03:17:19 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_coerce.c,v 2.18 1999/06/17 22:21:41 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -20,6 +20,7 @@
#include "parser/parse_expr.h"
#include "catalog/pg_type.h"
#include "parser/parse_func.h"
#include "parser/parse_type.h"
#include "parser/parse_target.h"
#include "parser/parse_coerce.h"
@ -132,7 +133,7 @@ can_coerce_type(int nargs, Oid *input_typeids, Oid *func_typeids)
HeapTuple ftup;
int i;
Type tp;
Oid oid_array[8];
Oid oid_array[MAXFARGS];
/* run through argument list... */
for (i = 0; i < nargs; i++)
@ -160,7 +161,7 @@ can_coerce_type(int nargs, Oid *input_typeids, Oid *func_typeids)
*/
else if (input_typeids[i] != UNKNOWNOID)
{
MemSet(&oid_array[0], 0, 8 * sizeof(Oid));
MemSet(oid_array, 0, MAXFARGS * sizeof(Oid));
oid_array[0] = input_typeids[i];
/*