Fix a faulty assert() in the merge implementation of the UNION operator.

Ticket #3467. (CVS 5852)

FossilOrigin-Name: cd1662e964d9c071a41038676c5a6ef2c990f1ac

manifest

@@ -1,5 +1,5 @@
-C Fix\sa\scrash\sthat\scan\sfollow\sa\smalloc\sfailure\sin\ssqlite3ValueFromExpr().\sTicket\s#3468.\s(CVS\s5851)
-D 2008-10-30T17:21:13
+C Fix\sa\sfaulty\sassert()\sin\sthe\smerge\simplementation\sof\sthe\sUNION\soperator.\nTicket\s#3467.\s(CVS\s5852)
+D 2008-10-30T22:13:23
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in da817da72422f9b876602c225fcd17d6ca4182f7
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -148,7 +148,7 @@ F src/prepare.c c7e00ed1b0bdcf699b1aad651247d4dc3d281b0b
 F src/printf.c 785f87120589c1db672e37c6eb1087c456e6f84d
 F src/random.c a87afbd598aa877e23ac676ee92fd8ee5c786a51
 F src/resolve.c 266bb03d2b456fe68f5df2dd5687e7e88ff8088d
-F src/select.c d910d7350df0d918e22286c5bfd39d4ea68ec813
+F src/select.c 59ffe26fe84e1f1f0bf8082dfa39f844c6a02f74
 F src/shell.c d83b578a8ccdd3e0e7fef4388a0887ce9f810967
 F src/sqlite.h.in f74e769732013f96d1ea71e4fe9a489c76bed785
 F src/sqlite3ext.h 1db7d63ab5de4b3e6b83dd03d1a4e64fef6d2a17
@@ -427,7 +427,7 @@ F test/mallocF.test 2d5c590ebc2fc7f0dcebdf5aa8498b9aed69107e
 F test/mallocG.test 4584d0d8ddb8009f16ca0c8bab1fa37f6358efa2
 F test/mallocH.test 79b65aed612c9b3ed2dcdaa727c85895fd1bfbdb
 F test/mallocI.test 6e24fe6444bd2999ccc81f984977b44c0d6e5591
-F test/mallocJ.test d7a6e82de88d194055ae715da50cc09179603282
+F test/mallocJ.test 5e7798d543cd837d6fd1c1d8086fe1867e705723
 F test/malloc_common.tcl 984baeb6c6b185e798827d1187d426acc2bc4962
 F test/manydb.test 8de36b8d33aab5ef295b11d9e95310aeded31af8
 F test/memdb.test a67bda4ff90a38f2b19f6c7f95aa7289e051d893
@@ -652,7 +652,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
 F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
-P 4c6a90a16627b1664bf7f15ab40b440b3bd60b48
-R 18a1372ede481036089807fde4a470c0
-U danielk1977
-Z 8cc2bcfa926e2577f603891ab838a0a1
+P 0996783b1b7e6dda166565071cbd19f23e7edbbc
+R 41c3494036b2c015e32affe1d847d6d3
+U drh
+Z 9a404301611b14e1f4a10624e376859d

manifest.uuid

@@ -1 +1 @@
-0996783b1b7e6dda166565071cbd19f23e7edbbc
+cd1662e964d9c071a41038676c5a6ef2c990f1ac

src/select.c

@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle SELECT statements in SQLite.
 **
-** $Id: select.c,v 1.480 2008/10/07 19:53:14 drh Exp $
+** $Id: select.c,v 1.481 2008/10/30 22:13:23 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -2144,7 +2144,7 @@ static int multiSelectOrderBy(
     regPrev = 0;
   }else{
     int nExpr = p->pEList->nExpr;
-    assert( nOrderBy>=nExpr );
+    assert( nOrderBy>=nExpr || db->mallocFailed );
     regPrev = sqlite3GetTempRange(pParse, nExpr+1);
     sqlite3VdbeAddOp2(v, OP_Integer, 0, regPrev);
     pKeyDup = sqlite3DbMallocZero(db,

test/mallocJ.test

@@ -12,7 +12,7 @@
 # This test script checks malloc failures in LIMIT operations for 
 # UPDATE/DELETE statements.
 # 
-# $Id: mallocJ.test,v 1.1 2008/10/10 13:34:30 shane Exp $
+# $Id: mallocJ.test,v 1.2 2008/10/30 22:13:23 drh Exp $
 
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
@@ -20,7 +20,7 @@ source $testdir/malloc_common.tcl
 
 ifcapable {update_delete_limit} {
 
-  do_malloc_test mallocJ-4 -sqlprep {
+  do_malloc_test mallocJ-1 -sqlprep {
     DROP TABLE IF EXISTS t1;
     CREATE TABLE t1(x int, y int);
     INSERT INTO t1 VALUES(1,1);
@@ -38,4 +38,15 @@ ifcapable {update_delete_limit} {
 
 }
 
+# ticket #3467
+do_malloc_test mallocJ-2 -sqlprep {
+  CREATE TABLE t1(a,b);
+  INSERT INTO t1 VALUES(1,2);
+} -sqlbody {
+  SELECT a, b, 'abc' FROM t1
+    UNION
+    SELECT b, a, 'xyz' FROM t1
+    ORDER BY 2, 3;
+}
+
 finish_test