From aff86a81b5dc66715158db48f0aae5c5b7dc36a5 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Thu, 12 Mar 2009 00:54:04 +0000 Subject: [PATCH] Fix core dump due to null-pointer dereference in to_char() when datetime format codes are misapplied to a numeric argument. (The code still produces a pretty bogus error message in such cases, but I'll settle for stopping the crash for now.) Per bug #4700 from Sergey Burladyan. Problem exists in all supported branches, so patch all the way back. In HEAD, also clean up some ugly coding in the nearby cache management code. --- src/backend/utils/adt/formatting.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/backend/utils/adt/formatting.c b/src/backend/utils/adt/formatting.c index 6955f0bad51..c821fad3a2f 100644 --- a/src/backend/utils/adt/formatting.c +++ b/src/backend/utils/adt/formatting.c @@ -1,7 +1,7 @@ /* ----------------------------------------------------------------------- * formatting.c * - * $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.69.2.3 2009/01/13 15:28:42 alvherre Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/formatting.c,v 1.69.2.4 2009/03/12 00:54:04 tgl Exp $ * * * Portions Copyright (c) 1999-2003, PostgreSQL Global Development Group @@ -347,7 +347,7 @@ static int DCHCounter = 0; /* global cache for --- number part */ static NUMCacheEntry NUMCache[NUM_CACHE_FIELDS + 1]; -static NUMCacheEntry *last_NUMCacheEntry; +static NUMCacheEntry *last_NUMCacheEntry = NUMCache + 0; static int n_NUMCache = 0; /* number of entries */ static int NUMCounter = 0;