From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Tue, 2 Oct 2012 07:43:48 +0000 (+0300)
Subject: Fix access past end of string in date parsing.
X-Git-Tag: REL9_1_7~60
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=6c00b2bbf7726efdf7d96ad5c9e9ef0450d2a150;p=postgresql

Fix access past end of string in date parsing.

This affects date_in(), and a couple of other funcions that use DecodeDate().

Hitoshi Harada
---

diff --git a/src/backend/utils/adt/datetime.c b/src/backend/utils/adt/datetime.c
index a3be406b68..e4866ce26c 100644
--- a/src/backend/utils/adt/datetime.c
+++ b/src/backend/utils/adt/datetime.c
@@ -2169,9 +2169,12 @@ DecodeDate(char *str, int fmask, int *tmask, bool *is2digits,
 	while (*str != '\0' && nf < MAXDATEFIELDS)
 	{
 		/* skip field separators */
-		while (!isalnum((unsigned char) *str))
+		while (*str != '\0' && !isalnum((unsigned char) *str))
 			str++;
 
+		if (*str == '\0')
+			return DTERR_BAD_FORMAT;		/* end of string after separator */
+
 		field[nf] = str;
 		if (isdigit((unsigned char) *str))
 		{