From 76f8079623ba1e5b21dd4942fc6d53768abd96c1 Mon Sep 17 00:00:00 2001
From: drh <drh@noemail.net>
Date: Tue, 11 Jul 2006 12:40:25 +0000
Subject: [PATCH] Fix a NULL pointer deference following malloc failure.  Bug
 discovered by klocwork. (CVS 3328)

FossilOrigin-Name: eb91612f4646b15c2b8398c5225669419b03b531
---
 manifest         | 14 +++++++-------
 manifest.uuid    |  2 +-
 src/util.c       |  8 +++++---
 test/malloc.test |  4 ++--
 4 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/manifest b/manifest
index 8c8b618ad8..f4b0a99545 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\sa\spossible\sNULL-pointer\sdeference\sfollowing\sa\smalloc\sfailure.\nError\sdiscovered\sby\sKlocwork.\s(CVS\s3327)
-D 2006-07-11T10:42:36
+C Fix\sa\sNULL\spointer\sdeference\sfollowing\smalloc\sfailure.\s\sBug\sdiscovered\nby\sklocwork.\s(CVS\s3328)
+D 2006-07-11T12:40:25
 F Makefile.in 9c2a76055c305868cc5f5b73e29a252ff3632c0a
 F Makefile.linux-gcc 2d8574d1ba75f129aba2019f0b959db380a90935
 F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
@@ -95,7 +95,7 @@ F src/tokenize.c 7b448440dfd6e984d6bef7ac7fc60f1d26eaf8e7
 F src/trigger.c 0fc40125820409a6274834a6e04ad804d96e2793
 F src/update.c 951f95ef044cf6d28557c48dc35cb0711a0b9129
 F src/utf.c ab81ac59084ff1c07d421eb1a0a84ec809603b44
-F src/util.c 410adf9074b81c58e276a3dd5c1295ef6e5eeda4
+F src/util.c c8ada8bab6b8822084d05c270d160867d3714aaf
 F src/vacuum.c 5b37d0f436f8e1ffacd17934e44720b38d2247f9
 F src/vdbe.c 3ffc96ec2e870b3ab3e59d1f6fe34687e4ed1db6
 F src/vdbe.h 258b5d1c0aaa72192f09ff0568ce42b383f156fa
@@ -201,7 +201,7 @@ F test/lock.test 9b7afcb24f53d24da502abb33daaad2cd6d44107
 F test/lock2.test d83ba79d3c4fffdb5b926c7d8ca7a36c34288a55
 F test/lock3.test 615111293cf32aa2ed16d01c6611737651c96fb9
 F test/main.test e7212ce1023957c7209778cc87fa932bd79ba89a
-F test/malloc.test 98a189ae3d49ab6259578dbf776decc172c6b7b9
+F test/malloc.test 4d5d382e40f1171cc63adb44aca4ab2dbb8a098c
 F test/malloc2.test e6e321db96d6c94cb18bf82ad7215070c41e624e
 F test/malloc3.test fd4186bee73c2a2638f4e2a05a684c06836f725b
 F test/malloc4.test 59cd02f71b363302a04c4e77b97c0a1572eaa210
@@ -375,7 +375,7 @@ F www/tclsqlite.tcl bb0d1357328a42b1993d78573e587c6dcbc964b9
 F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
 F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
 F www/whentouse.tcl 97e2b5cd296f7d8057e11f44427dea8a4c2db513
-P b10d4220dc12728933eae1fcdcebd88a5f92e3a7
-R 2487fc8a76f352045b0f691568aa792d
+P 368bcf264456f5506260797497bc8d8dc4897e0f
+R 23b4814e29ce2ab5bcc6f845bb301aeb
 U drh
-Z 94d7b33c75f2bffcb7a8af85fe3a09da
+Z 94facde76db6586626f382b43ed3c568
diff --git a/manifest.uuid b/manifest.uuid
index dbab0e1a37..c2e4cb1234 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-368bcf264456f5506260797497bc8d8dc4897e0f
\ No newline at end of file
+eb91612f4646b15c2b8398c5225669419b03b531
\ No newline at end of file
diff --git a/src/util.c b/src/util.c
index fe42b3e151..79885b04dd 100644
--- a/src/util.c
+++ b/src/util.c
@@ -14,7 +14,7 @@
 ** This file contains functions for allocating memory, comparing
 ** strings, and stuff like that.
 **
-** $Id: util.c,v 1.190 2006/06/27 13:20:21 drh Exp $
+** $Id: util.c,v 1.191 2006/07/11 12:40:25 drh Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -1357,8 +1357,10 @@ void *sqlite3HexToBlob(const char *z){
   if( n%2 ) return 0;
 
   zBlob = (char *)sqliteMalloc(n/2);
-  for(i=0; i<n; i+=2){
-    zBlob[i/2] = (hexToInt(z[i])<<4) | hexToInt(z[i+1]);
+  if( zBlob ){
+    for(i=0; i<n; i+=2){
+      zBlob[i/2] = (hexToInt(z[i])<<4) | hexToInt(z[i+1]);
+    }
   }
   return zBlob;
 }
diff --git a/test/malloc.test b/test/malloc.test
index a6b0f901ea..672c1bd5dd 100644
--- a/test/malloc.test
+++ b/test/malloc.test
@@ -14,7 +14,7 @@
 # special feature is used to see what happens in the library if a malloc
 # were to really fail due to an out-of-memory situation.
 #
-# $Id: malloc.test,v 1.33 2006/06/26 12:50:09 drh Exp $
+# $Id: malloc.test,v 1.34 2006/07/11 12:40:25 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -136,7 +136,7 @@ do_malloc_test 1 -tclprep {
      primary key(a,b,c)
   );
   CREATE INDEX i1 ON t1(a,b);
-  INSERT INTO t1 VALUES(1,2.3,4.5,'hi','there');
+  INSERT INTO t1 VALUES(1,2.3,4.5,'hi',x'746865726500');
   INSERT INTO t1 VALUES(6,7.0,0.8,'hello','out yonder');
   SELECT * FROM t1;
   SELECT avg(b) FROM t1 GROUP BY a HAVING b>20.0;