Fix a problem in FTS3 phrase queries. Add tests to check that it really is fixed.

FossilOrigin-Name: 956de051f43dfc2f178a7820981da4bf69927190

ext/fts3/fts3.c

@@ -1310,6 +1310,7 @@ static int fts3DoclistMerge(
   );
 
   if( !aBuffer ){
+    *pnBuffer = 0;
     return SQLITE_NOMEM;
   }
 
@@ -1678,6 +1679,7 @@ static int fts3PhraseSelect(
       sqlite3_free(pOut);
       pOut = pList;
     }
+    assert( nOut==0 || pOut!=0 );
   }
 
   if( rc==SQLITE_OK ){

manifest

@@ -1,5 +1,5 @@
-C Modified\sstatement\smachine\sin\ssqlite3_complete()\sto\sreturn\s0\son\sempty\sstring.\s\s\nAdded/updated\stests\sfor\ssame.\s\sTicket\s356c885b0b.
-D 2009-12-17T22:17:39
+C Fix\sa\sproblem\sin\sFTS3\sphrase\squeries.\sAdd\stests\sto\scheck\sthat\sit\sreally\sis\sfixed.
+D 2009-12-20T15:00:19
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in c5827ead754ab32b9585487177c93bb00b9497b3
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -56,7 +56,7 @@ F ext/fts2/mkfts2amal.tcl 974d5d438cb3f7c4a652639262f82418c1e4cff0
 F ext/fts3/README.syntax a19711dc5458c20734b8e485e75fb1981ec2427a
 F ext/fts3/README.tokenizers 998756696647400de63d5ba60e9655036cb966e9
 F ext/fts3/README.txt 8c18f41574404623b76917b9da66fcb0ab38328d
-F ext/fts3/fts3.c 682882c15f73acc1bcf11fa9c1832f7d7efae552
+F ext/fts3/fts3.c 9c4ab6e74b20d9cc3806453f6fbdde6a84e97bb7
 F ext/fts3/fts3.h 3a10a0af180d502cecc50df77b1b22df142817fe
 F ext/fts3/fts3Int.h 6fdd41b4f296e5bcc908444dc591397995d4ff5d
 F ext/fts3/fts3_expr.c fcf6812dbfd9cb9a2cabaf50e741411794f83e7e
@@ -403,6 +403,7 @@ F test/fts3expr.test 05dab77387801e4900009917bb18f556037d82da
 F test/fts3expr2.test 18da930352e5693eaa163a3eacf96233b7290d1a
 F test/fts3malloc.test d02ee86b21edd2b43044e0d6dfdcd26cb6efddcb
 F test/fts3near.test dc196dd17b4606f440c580d45b3d23aa975fd077
+F test/fts3query.test 5561e1feed538d91512e0357f46db6a5aca4bb4d
 F test/fts3rnd.test 2a78df5478657fca6444ee03cf930437c47e9a5e
 F test/func.test af106ed834001738246d276659406823e35cde7b
 F test/func2.test 772d66227e4e6684b86053302e2d74a2500e1e0f
@@ -781,7 +782,7 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
-P 85e3c73497d72d09becf728efe81041277ca1730
-R 441a9b5eb3dd9b55570d6d08e1a1ee71
-U shaneh
-Z 240b5a79be1f4714cd0b02c34f1cf679
+P 76eca7295cf7df4bef013af6c8c37251300cd383
+R 7ac7e4b32e185dd57f665de6fbe0aef1
+U dan
+Z 3c6bba649fde926859de26956e1ee61f

manifest.uuid

@@ -1 +1 @@
-76eca7295cf7df4bef013af6c8c37251300cd383
+956de051f43dfc2f178a7820981da4bf69927190

test/fts3query.test

@@ -0,0 +1,93 @@
+# 2009 December 20
+#
+# The author disclaims copyright to this source code.  In place of
+# a legal notice, here is a blessing:
+#
+#    May you do good and not evil.
+#    May you find forgiveness for yourself and forgive others.
+#    May you share freely, never taking more than you give.
+#
+#***********************************************************************
+#
+# This file contains tests of fts3 queries that have been useful during
+# the development process as well as some that have been useful in tracking
+# down bugs. They are not focused on any particular functionality.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# If this build does not include FTS3, skip the tests in this file.
+#
+ifcapable !fts3 { finish_test ; return }
+source $testdir/fts3_common.tcl
+set DO_MALLOC_TEST 0
+
+do_test fts3query-1.1 {
+  execsql {
+    CREATE VIRTUAL TABLE t1 USING fts3(x);
+    BEGIN;
+      INSERT INTO t1 VALUES('The source code for SQLite is in the public');
+  }
+} {}
+
+do_select_test fts3query-1.2 {
+  SELECT * FROM t1;
+} {{The source code for SQLite is in the public}}
+do_select_test fts3query-1.3 {
+  SELECT * FROM t1 WHERE t1 MATCH 'sqlite'
+} {{The source code for SQLite is in the public}}
+
+do_test fts3query-1.4 { execsql {COMMIT} } {}
+
+do_select_test fts3query-1.5 {
+  SELECT * FROM t1;
+} {{The source code for SQLite is in the public}}
+do_select_test fts3query-1.6 {
+  SELECT * FROM t1 WHERE t1 MATCH 'sqlite'
+} {{The source code for SQLite is in the public}}
+
+
+set sqlite_fts3_enable_parentheses 1
+do_test fts3query-2.1 {
+  execsql {
+    CREATE VIRTUAL TABLE zoink USING fts3;
+    INSERT INTO zoink VALUES('The apple falls far from the tree');
+  }
+} {}
+do_test fts3query-2.2 {
+  execsql {
+    SELECT docid FROM zoink WHERE zoink MATCH '(apple oranges) AND apple'
+  }
+} {}
+do_test fts3query-2.3 {
+  execsql {
+    SELECT docid FROM zoink WHERE zoink MATCH 'apple AND (oranges apple)'
+  }
+} {}
+set sqlite_fts3_enable_parentheses 0
+
+do_test fts3query-3.1 {
+  execsql {
+    CREATE VIRTUAL TABLE foobar using FTS3(description, tokenize porter);
+    INSERT INTO foobar (description) values ('
+      Filed under: Emerging Technologies, EV/Plug-in, Hybrid, Chevrolet, GM, 
+      ZENN 2011 Chevy Volt - Click above for high-res image gallery There are 
+      16 days left in the month of December. Besides being time for most 
+      Americans to kick their Christmas shopping sessions into high gear and
+      start planning their resolutions for 2010, it also means that there''s
+      precious little time for EEStor to "deliver functional technology" to
+      Zenn Motors as promised. Still, the promises held out by the secretive
+      company are too great for us to forget about entirely. We''d love for
+      EEStor''s claims to be independently verified and proven accurate, as
+      would just about anyone else looking to break free of petroleum in fav
+    '); 
+  }
+} {}
+
+do_test fts3query-3.2 {
+  execsql { SELECT docid FROM foobar WHERE description MATCH '"high sp d"' }
+} {}
+
+finish_test
+