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Repair problems with to_char() overrunning its input string.

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From Karel Zak.
This commit is contained in:
Tom Lane
2003-09-03 15:00:07 +00:00
parent ba91f3b1de
commit e6d6713ceb
1 changed files with 11 additions and 1 deletions
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12
src/backend/utils/adt/formatting.c
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@@ -1,7 +1,7 @@
/* ----------------------------------------------------------------------- /* -----------------------------------------------------------------------
* formatting.c * formatting.c
* *
* $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.56 2002/09/20 03:57:09 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.56.2.1 2003/09/03 15:00:07 tgl Exp $
* *
* *
* Portions Copyright (c) 1999-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1999-2002, PostgreSQL Global Development Group
@@ -1264,6 +1264,16 @@ DCH_processor(FormatNode *node, char *inout, int flag, void *data)
for (n = node, s = inout; n->type != NODE_TYPE_END; n++) for (n = node, s = inout; n->type != NODE_TYPE_END; n++)
{ {
if (flag == FROM_CHAR && *s=='\0')
/*
* The input string is shorter than format picture,
* so it's good time to break this loop...
*
* Note: this isn't relevant for TO_CHAR mode, beacuse
* it use 'inout' allocated by format picture length.
*/
break;
if (n->type == NODE_TYPE_ACTION) if (n->type == NODE_TYPE_ACTION)
{ {
int len; int len;