Fix an obscure memory leak that can follow an IO error. (CVS 5956)

FossilOrigin-Name: 8271229c66c72c344ad7afb901b88d9cdaaa6f43

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\scouple\sof\sassert()\sfailures\sprovoked\sby\srunning\swith\sa\ssmall\sdefault\scache-size\s(64\spages).\s(CVS\s5955)
-D 2008-11-26T07:25:52
+C Fix\san\sobscure\smemory\sleak\sthat\scan\sfollow\san\sIO\serror.\s(CVS\s5956)
+D 2008-11-26T07:40:30
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in 0aa7bbe3be6acc4045706e3bb3fd0b8f38f4a3b5
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -100,7 +100,7 @@ F src/attach.c 85c6a3d0daf11965b47604190d7cf5597dc88382
 F src/auth.c c8b2ab5c8bad4bd90ed7c294694f48269162c627
 F src/bitvec.c 4300d311b17fb3c1476623fd895a8feac02a0b08
 F src/btmutex.c 63c5cc4ad5715690767ffcb741e185d7bc35ec1a
-F src/btree.c 950070c67fc0edbed21b5cfae12bcf977f8859f4
+F src/btree.c 615a2b9e6173cd0779d0b4c49d7d680acf761e5d
 F src/btree.h 179c3ea813780df78a289a8f5130db18e6d4616e
 F src/btreeInt.h 8d21590c97b6a2c00cce1f78ed5dc5756e835108
 F src/build.c a89e901ea24d8ec845286f9a1fbfd14572a7777e
@@ -387,7 +387,7 @@ F test/insert5.test 1f93cbe9742110119133d7e8e3ccfe6d7c249766
 F test/interrupt.test 42e7cf98646fd9cb4a3b131a93ed3c50b9e149f1
 F test/intpkey.test 537669fd535f62632ca64828e435b9e54e8d677f
 F test/io.test d80d0682be7c4ce2f0da1dfe0444a2ba563df949
-F test/ioerr.test b42f249c9181b5864e53fdae38ef75475d71c66f
+F test/ioerr.test 12f9000bb9024b4b1386320e60badd5223e75b16
 F test/ioerr2.test a8428580ce12ce67a6f16d85e2640fa6ce2da888
 F test/ioerr3.test d3cec5e1a11ad6d27527d0d38573fbff14c71bdd
 F test/ioerr4.test fc6eddfec2efc2f1ed217b9eae4c1c1d3516ce86
@@ -662,7 +662,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-P 622cb59791ab9f61c2e5131cb6ece5e75cdc9fae
-R ccf164744ce5645c6babde1974c729ae
+P 1a66481a37dd9a21673c0ffb3df2be0614fe9f63
+R 0738b0a779bd8893bc38555e88feb4fd
 U danielk1977
-Z a1b3bbe62c207f2151555f5f0331091f
+Z 1fa6bfa3aaf0643fc7acabd1899b00a4

manifest.uuid

@@ -1 +1 @@
-1a66481a37dd9a21673c0ffb3df2be0614fe9f63
+8271229c66c72c344ad7afb901b88d9cdaaa6f43

src/btree.c

@@ -9,7 +9,7 @@
 **    May you share freely, never taking more than you give.
 **
 *************************************************************************
-** $Id: btree.c,v 1.541 2008/11/26 07:25:52 danielk1977 Exp $
+** $Id: btree.c,v 1.542 2008/11/26 07:40:30 danielk1977 Exp $
 **
 ** This file implements a external (disk-based) database using BTrees.
 ** See the header comment on "btreeInt.h" for additional information.
@@ -2927,6 +2927,7 @@ void sqlite3BtreeGetTempCursor(BtCursor *pCur, BtCursor *pTempCur){
   for(i=0; i<=pTempCur->iPage; i++){
     sqlite3PagerRef(pTempCur->apPage[i]->pDbPage);
   }
+  assert( pTempCur->pKey==0 );
 }
 
 /*
@@ -2939,6 +2940,7 @@ void sqlite3BtreeReleaseTempCursor(BtCursor *pCur){
   for(i=0; i<=pCur->iPage; i++){
     sqlite3PagerUnref(pCur->apPage[i]->pDbPage);
   }
+  sqlite3_free(pCur->pKey);
 }
 
 /*

test/ioerr.test

@@ -15,7 +15,7 @@
 # The tests in this file use special facilities that are only
 # available in the SQLite test fixture.
 #
-# $Id: ioerr.test,v 1.41 2008/07/12 14:52:20 drh Exp $
+# $Id: ioerr.test,v 1.42 2008/11/26 07:40:30 danielk1977 Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -404,4 +404,27 @@ do_ioerr_test ioerr-14 -ckrefcount true -erc 1 -sqlprep {
   COMMIT;
 }
 
+do_ioerr_test ioerr-15 -tclprep {
+  db eval {
+    BEGIN;
+    PRAGMA cache_size = 10;
+    CREATE TABLE t1(a);
+    CREATE INDEX i1 ON t1(a);
+    CREATE TABLE t2(a);
+  }
+  for {set ii 1} {$ii < 100} {incr ii} {
+    set v [string range [string repeat [format %.3d $ii] 200] 0 220]
+    db eval {INSERT INTO t1 VALUES($v)}
+  }
+  db eval {
+    DELETE FROM t1 WHERE oid > 85;
+    COMMIT;
+  }
+} -sqlbody {
+  BEGIN;
+  INSERT INTO t2 VALUES(randstr(22000,22000));
+  DELETE FROM t1 WHERE oid = 83;
+  COMMIT;
+} 
+
 finish_test