diff --git a/ext/fts3/fts3_write.c b/ext/fts3/fts3_write.c
index ee5cdb3c0d..6960c31bd1 100644
--- a/ext/fts3/fts3_write.c
+++ b/ext/fts3/fts3_write.c
@@ -3797,14 +3797,14 @@ static int nodeReaderInit(NodeReader *p, const char *aNode, int nNode){
   p->nNode = nNode;
 
   /* Figure out if this is a leaf or an internal node. */
-  if( p->aNode[0] ){
+  if( aNode && aNode[0] ){
     /* An internal node. */
     p->iOff = 1 + sqlite3Fts3GetVarint(&p->aNode[1], &p->iChild);
   }else{
     p->iOff = 1;
   }
 
-  return nodeReaderNext(p);
+  return aNode ? nodeReaderNext(p) : SQLITE_OK;
 }
 
 /*
@@ -4296,8 +4296,8 @@ static int fts3IncrmergeLoad(
         NodeReader reader;
         pNode = &pWriter->aNodeWriter[i];
 
-        rc = nodeReaderInit(&reader, pNode->block.a, pNode->block.n);
-        if( reader.aNode ){
+        if( pNode->block.a){
+          rc = nodeReaderInit(&reader, pNode->block.a, pNode->block.n);
           while( reader.aNode && rc==SQLITE_OK ) rc = nodeReaderNext(&reader);
           blobGrowBuffer(&pNode->key, reader.term.n, &rc);
           if( rc==SQLITE_OK ){
diff --git a/manifest b/manifest
index bf11626237..c673bdb3d4 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Merge\sin\sthe\s3.30.0\sbeta\s1\senhancements.
-D 2019-09-30T16:49:59.832
+C Bring\sthe\sbegin-concurrent-pnu-wal2\sbranch\sup-to-date\swith\s3.30.0.
+D 2019-10-04T16:24:47.090
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -101,7 +101,7 @@ F ext/fts3/fts3_tokenizer.h 64c6ef6c5272c51ebe60fc607a896e84288fcbc3
 F ext/fts3/fts3_tokenizer1.c 5c98225a53705e5ee34824087478cf477bdb7004
 F ext/fts3/fts3_unicode.c 4b9af6151c29b35ed09574937083cece7c31e911f69615e168a39677569b684d
 F ext/fts3/fts3_unicode2.c 416eb7e1e81142703520d284b768ca2751d40e31fa912cae24ba74860532bf0f
-F ext/fts3/fts3_write.c 6efc4cd7dc554df06c35bfd3335503838645806a78fc33137a55eb97a8b2f3b2
+F ext/fts3/fts3_write.c 13582783abedf905e6946ce95edff7103c07810fb03a9c3b40212d21a3efa09c
 F ext/fts3/fts3speed.tcl b54caf6a18d38174f1a6e84219950d85e98bb1e9
 F ext/fts3/mkfts3amal.tcl 252ecb7fe6467854f2aa237bf2c390b74e71f100
 F ext/fts3/tool/fts3cov.sh c331d006359456cf6f8f953e37f2b9c7d568f3863f00bb5f7eb87fea4ac01b73
@@ -495,7 +495,7 @@ F src/hwtime.h 747c1bbe9df21a92e9c50f3bbec1de841dc5e5da
 F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
 F src/insert.c 40557ebd69f4115e7a273f9304a8ab637a47ce44f3c6923396928f023967b5e8
 F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
-F src/loadext.c a045bb3425a9a633cc0f78e93d9beda6866f4c0f15bfdee735aba7c6b39f5cc4
+F src/loadext.c 4ddc65ae13c0d93db0ceedc8b14a28c8c260513448b0eb8c5a2ac375e3b6a85d
 F src/main.c d702cd01d10eb97648edd655d7194e15bac985dd015df196c9df8a45fb46f74c
 F src/malloc.c 0f9da2a66b230a5785af94b9672126845099b57b70a32c987d04ac28c69da990
 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
@@ -507,7 +507,7 @@ F src/memdb.c 02a5fcec19b9d40dd449ca802dc1b2e8f93f255fbf2a886277a3c3800d8d35db
 F src/memjournal.c 7561c01c90958f3ba9bc6cb2d857123d932bdfa5539ea34427a0957b2e35154d
 F src/msvc.h 3a15918220367a8876be3fa4f2abe423a861491e84b864fb2b7426bf022a28f8
 F src/mutex.c bae36f8af32c22ad80bbf0ccebec63c252b6a2b86e4d3e42672ff287ebf4a604
-F src/mutex.h 779d588e3b7756ec3ecf7d78cde1d84aba414f85
+F src/mutex.h a7b2293c48db5f27007c3bdb21d438873637d12658f5a0bf8ad025bb96803c4a
 F src/mutex_noop.c 9d4309c075ba9cc7249e19412d3d62f7f94839c4
 F src/mutex_unix.c aaf9ebc3f89df28483c52208497a99a02cc3650011422fc9d4c57e4392f7fe58
 F src/mutex_w32.c 7670d770c94bbfe8289bec9d7f1394c5a00a57c37f892aab6b6612d085255235
@@ -533,7 +533,7 @@ F src/random.c f27af4099afaea7284ade5c206224dcfdb2334cfd119d018b470d46356b3f27d
 F src/resolve.c e021be0c1c4a2125fa38aabcd8dbb764bf5b2c889a948c30d3708430ec6ccd00
 F src/rowset.c d977b011993aaea002cab3e0bb2ce50cf346000dff94e944d547b989f4b1fe93
 F src/select.c addc1c57cb391158d1d444e237a90b83797395b60214d660715c149c1aeb8bf4
-F src/shell.c.in 026d8a5b3e1c477f23ef027e1ecb4c86e9e3fed0aa922e3825cf4d7feb6bdd69
+F src/shell.c.in d70bcf630c4073eaa994fa74be98886c781918e794cb8b562be8df10f018e274
 F src/sqlite.h.in 5c794e32368499d5b9f1a034d426e8d1968f5593aff1ae5efc5197fb32b053e3
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h cef696ce3293242c67b2339763608427bf72ee66f1f3a05389ac2a7b46001c31
@@ -542,7 +542,7 @@ F src/sqliteLimit.h 1513bfb7b20378aa0041e7022d04acb73525de35b80b252f1b83fedb4de6
 F src/status.c 46e7aec11f79dad50965a5ca5fa9de009f7d6bde08be2156f1538a0a296d4d0e
 F src/table.c b46ad567748f24a326d9de40e5b9659f96ffff34
 F src/tclsqlite.c 50c93be3e1c03b4e6cf6756e5197afcfe7f5cd0497d83a7ac317cde09e19b290
-F src/test1.c dba1b71424954bd61725cdc09d7af44cee99dd9bd58e72b80c743adde5809019
+F src/test1.c e9f578242b276b48f826ea35850aa5077f59a1128a2ff4575356ba27e88f446f
 F src/test2.c 3efb99ab7f1fc8d154933e02ae1378bac9637da5
 F src/test3.c 61798bb0d38b915067a8c8e03f5a534b431181f802659a6616f9b4ff7d872644
 F src/test4.c 405834f6a93ec395cc4c9bb8ecebf7c3d8079e7ca16ae65e82d01afd229694bb
@@ -604,7 +604,7 @@ F src/upsert.c 710c91bb13e3c3fed5b6fe17cb13e09560bdd003ad8b8c51e6b16c80cfc48b10
 F src/utf.c 2f0fac345c7660d5c5bd3df9e9d8d33d4c27f366bcfb09e07443064d751a0507
 F src/util.c fffdfa627be74d69ef425f92db124e7148af449bb8a3286e79577c42bca84061
 F src/vacuum.c 0bbe81da32e3adb91bd70d84da38494234857373fb2e94811c4a5eb21cee870d
-F src/vdbe.c ca8912c339c5773e1763fb9087d7aaf7fdce8aebc4a144f768ad66445a4c6686
+F src/vdbe.c a81238e51e05e34b14935054cd5115299c05d32c94ce0c128e99b44f99b78ba8
 F src/vdbe.h 3f2b571e702e77e6bf031f0236e554aedfae643e991f69000320f481408455cf
 F src/vdbeInt.h e95de5129124d77f01439e6635012adfaf23c0017bff47296126143cf18bd0c6
 F src/vdbeapi.c 95001d0f84ee3cda344fed98ca0d7961deb4fc836b83495630d0af1f7cc4789e
@@ -624,7 +624,7 @@ F src/wherecode.c 535c8e228478fd971b9a5b6cb6773995b0fbf7020d5989508a5094ce5b8cd9
 F src/whereexpr.c 05c283d26aa9c3f5d1bf13a5f6a573b43295b9db280eff18e26f97d7d7f119b4
 F src/window.c 064f251451c8e2a1c76b6269229d911a651e119c6a5f522b6eaebf8dc8714041
 F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
-F test/affinity2.test da465d3d490ab24ef64f7715b5953343a4967762b9350b29eb1462879ff3fb9e
+F test/affinity2.test ce1aafc86e110685b324e9a763eab4f2a73f737842ec3b687bd965867de90627
 F test/affinity3.test 6a101af2fc945ce2912f6fe54dd646018551710d
 F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
 F test/aggnested.test 12106f0748e8e9bfc1a8e6840e203e051eae06a26ed13fc9fd5db108a8d6db54
@@ -787,7 +787,7 @@ F test/corruptI.test a17bbf54fdde78d43cf3cc34b0057719fd4a173a3d824285b67dc5257c0
 F test/corruptJ.test 4d5ccc4bf959464229a836d60142831ef76a5aa4
 F test/corruptK.test 5b4212fe346699831c5ad559a62c54e11c0611bdde1ea8423a091f9c01aa32af
 F test/corruptL.test dfad96373bf9264d73039315ea6013994b90bf6776847adc7ec06b6fad3c04b2
-F test/corruptM.test 04a4061b1979283851953217e411187be79e50f5e5e3ef340c3f8e564173aae1
+F test/corruptM.test 7d574320e08c1b36caa3e47262061f186367d593a7e305d35f15289cc2c3e067
 F test/cost.test 51f4fcaae6e78ad5a57096831259ed6c760e2ac6876836e91c00030fad385b34
 F test/count.test cb2e0f934c6eb33670044520748d2ecccd46259c
 F test/countofview.test e17d6e6688cf74f22783c9ec6e788c0790ee4fbbaee713affd00b1ac0bb39b86
@@ -1002,6 +1002,7 @@ F test/fts4merge.test 1096e30b58ad616bd502141bfe5bfe4c3a518df89e958d41a5ed1ce322
 F test/fts4merge2.test 5faa558d1b672f82b847d2a337465fa745e46891
 F test/fts4merge3.test 8d9ccb4a3d41c4c617a149d6c4b13ad02de797d0
 F test/fts4merge4.test d895b1057a7798b67e03455d0fa50e9ea836c47b
+F test/fts4merge5.test 69932d85cda8a1c4dcfb742865900ed8fbda51724b8cf9a45bbe226dfd06c596
 F test/fts4noti.test 5553d7bb2e20bf4a06b23e849352efc022ce6309
 F test/fts4onepass.test d69ddc4ee3415e40b0c5d1d0408488a87614d4f63ba9c44f3e52db541d6b7cc7
 F test/fts4opt.test 0fd0cc84000743ff2a883b9b84b4a5be07249f0ba790c8848a757164cdd46b2a
@@ -1236,7 +1237,7 @@ F test/pagesize.test 5769fc62d8c890a83a503f67d47508dfdc543305
 F test/pcache.test c8acbedd3b6fd0f9a7ca887a83b11d24a007972b
 F test/pcache2.test af7f3deb1a819f77a6d0d81534e97d1cf62cd442
 F test/percentile.test 4243af26b8f3f4555abe166f723715a1f74c77ff
-F test/permutations.test f50586ec3c9e02383eba04db24c31cf834bdda65e74846ab098d413216bae157
+F test/permutations.test d25c0732ce4b1a728a064bc7005f1ca628d2301932cfbdda563bbb38b0ce5262
 F test/pg_common.tcl 222a1bad1c41c308fa366313cd7b51b3be7e9b21c8736a421b974ac941693b54
 F test/pragma.test 59becdfd720b80d463ab750f69f7118fde10dfd556aa5d554f3bf6b7e5ea7533
 F test/pragma2.test e5d5c176360c321344249354c0c16aec46214c9f
@@ -1264,7 +1265,7 @@ F test/recover.test ccb8c2623902a92ebb76770edd075cb4f75a4760bb7afde38026572c6e79
 F test/regexp1.test 497ea812f264d12b6198d6e50a76be4a1973a9d8
 F test/regexp2.test 40e894223b3d6672655481493f1be12012f2b33c
 F test/reindex.test cd9d6021729910ece82267b4f5e1b5ac2911a7566c43b43c176a6a4732e2118d
-F test/releasetest.tcl 968fc1e8fd23e113fb8a04379747f3a9f2c12d207b2de85aeff5a825962e1cd7 x
+F test/releasetest.tcl fb76d8fcc95ac29d6356cd9e52b726ab9e43a24082897618dfbcb7c2b0049153 x
 F test/releasetest_data.tcl 9919fc6ac5bc92f8878fecfd1840db15999f660a6c9f609240b41aa62b885c88
 F test/resetdb.test 8062cf10a09d8c048f8de7711e94571c38b38168db0e5877ba7561789e5eeb2b
 F test/resolver01.test f4022acafda7f4d40eca94dbf16bc5fc4ac30ceb
@@ -1704,7 +1705,7 @@ F test/walslow.test c05c68d4dc2700a982f89133ce103a1a84cc285f
 F test/walthread.test 14b20fcfa6ae152f5d8e12f5dc8a8a724b7ef189f5d8ef1e2ceab79f2af51747
 F test/walvfs.test f1accd66c876e3a0f6b4bef5b18d13411062d0ff0a0016e32bb41570474e99fc
 F test/wapp.tcl b440cd8cf57953d3a49e7ee81e6a18f18efdaf113b69f7d8482b0710a64566ec
-F test/wapptest.tcl 3090239c59379d41e1a0644feb6683082fdb86edfab0c668973f8003f22c0e5d x
+F test/wapptest.tcl 3cca775aede0591756a1fc0da55bbb3715d8c363873fd2cfdd4d555b0a4af57d x
 F test/where.test 19c709c9f0f6ed12c23f909f6592aa55fba34269d5a2898537aa27a22b9ce650
 F test/where2.test 478d2170637b9211f593120648858593bf2445a1
 F test/where3.test 2341a294e17193a6b1699ea7f192124a5286ca6acfcc3f4b06d16c931fbcda2c
@@ -1758,13 +1759,13 @@ F test/with2.test e0030e2f0267a910d6c0e4f46f2dfe941c1cc0d4f659ba69b3597728e7e8f1
 F test/with3.test b5f1372097690c6ef84db2f13fc7e64a88c7263c3f88493605f90597e8a68d45
 F test/with4.test 257be66c0c67fee1defbbac0f685c3465e2cad037f21ce65f23f86084f198205
 F test/withM.test 693b61765f2b387b5e3e24a4536e2e82de15ff64
-F test/without_rowid1.test f40c2757272ce171b88e4227f14450db2c4d42800d447baa7656a65562d2f8d9
+F test/without_rowid1.test 0abe18762b74714580c1d4d00a8e540e58966d3e46aae41ddb1a1d2c88c9277d
 F test/without_rowid2.test af260339f79d13cb220288b67cd287fbcf81ad99
 F test/without_rowid3.test ea4b59dd1b0d7f5f5e4b7cca978cdb905752a9d7c57dc4344a591dba765a3691
 F test/without_rowid4.test 4e08bcbaee0399f35d58b5581881e7a6243d458a
 F test/without_rowid5.test 89b1c587bd92a0590e440da33e7666bf4891572a
-F test/without_rowid6.test 3c1bbf0eb81c672115933158b62b009e67cf1a7f8c2c612bbce63a7385efa18e
-F test/without_rowid7.test 0e0d7be00f05f54898e20e07bcc947cd97b42d7106021fa0d2897324bc6d330e
+F test/without_rowid6.test 8463b20098e9f75a501a9f17dfb42fffc79068eac0b2775fe56ef2281d2df45e
+F test/without_rowid7.test d7c59a93d726b55812d620f8f284e01904a5b85f9ee9eea8f2f68571a5e8c40e
 F test/wordcount.c d721a4b6fae93e6e33449700bce1686bc23257c27425bc3ef1599dc912adec66
 F test/writecrash.test f1da7f7adfe8d7f09ea79b42e5ca6dcc41102f27f8e334ad71539501ddd910cc
 F test/zeroblob.test 07a5b11ab591d1f26c626945fb7f228f68b993533b2ada77273edf6ee29db174
@@ -1875,7 +1876,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 15593bf3ad9650ce6a6ef8591240eba1be11974d3827cb86ebf0ecec3acda321 918bd97d2946c0a403030fcf0eba596a742ada94b122bf0ac4b808097171056b
-R 14a2b6e512944d3eae00258663f0742b
+P ebf8872626e71f5fbaefb76e95d218dfa123d15134762c810d6a5f442325154e 16e1dced8b56ef422e5b747dd26accba5bf9f2df69b24b10363ef288890e21ee
+R 556acaaef6b1df878b539e6537d27862
 U drh
-Z b686345ed7e3385b4fd027116b867118
+Z 72dc42d82d67df2be002412a3fb18a38
diff --git a/manifest.uuid b/manifest.uuid
index d4acd4078c..56d420a80c 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-ebf8872626e71f5fbaefb76e95d218dfa123d15134762c810d6a5f442325154e
\ No newline at end of file
+dd09f7ce970e8b139d105d005a4c99ae0766c1cba6e0794d46bd6879570c33bc
\ No newline at end of file
diff --git a/src/loadext.c b/src/loadext.c
index 03997c0275..423a16fde9 100644
--- a/src/loadext.c
+++ b/src/loadext.c
@@ -463,7 +463,11 @@ static const sqlite3_api_routines sqlite3Apis = {
   sqlite3_stmt_isexplain,
   sqlite3_value_frombind,
   /* Version 3.30.0 and later */
+#ifndef SQLITE_OMIT_VIRTUALTABLE
   sqlite3_drop_modules,
+#else
+  0,
+#endif
 };
 
 /*
diff --git a/src/mutex.h b/src/mutex.h
index 03eb1faadb..a6806a2505 100644
--- a/src/mutex.h
+++ b/src/mutex.h
@@ -67,4 +67,5 @@
 #define MUTEX_LOGIC(X)
 #else
 #define MUTEX_LOGIC(X)            X
+int sqlite3_mutex_held(sqlite3_mutex*);
 #endif /* defined(SQLITE_MUTEX_OMIT) */
diff --git a/src/shell.c.in b/src/shell.c.in
index 549216e32f..7f82675e35 100644
--- a/src/shell.c.in
+++ b/src/shell.c.in
@@ -9419,7 +9419,7 @@ static int do_meta_command(char *zLine, ShellState *p){
   }else
 #endif /* !defined(SQLITE_OMIT_TRACE) */
 
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_VIRTUALTABLE)
   if( c=='u' && strncmp(azArg[0], "unmodule", n)==0 ){
     int ii;
     int lenOpt;
diff --git a/src/test1.c b/src/test1.c
index a659a47636..4a8f95bfad 100644
--- a/src/test1.c
+++ b/src/test1.c
@@ -1131,7 +1131,9 @@ static int SQLITE_TCLAPI test_drop_modules(
     return TCL_ERROR;
   }
   if( getDbPointer(interp, argv[1], &db) ) return TCL_ERROR;
+#ifndef SQLITE_OMIT_VIRTUALTABLE
   sqlite3_drop_modules(db, argc>2 ? (const char**)(argv+2) : 0);
+#endif
   return TCL_OK;
 }
 
diff --git a/src/vdbe.c b/src/vdbe.c
index 6070a1f81a..c402b59d36 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -554,7 +554,7 @@ static void memTracePrint(Mem *p){
     printf(" i:%lld", p->u.i);
 #ifndef SQLITE_OMIT_FLOATING_POINT
   }else if( p->flags & MEM_Real ){
-    printf(" r:%g", p->u.r);
+    printf(" r:%.17g", p->u.r);
 #endif
   }else if( sqlite3VdbeMemIsRowSet(p) ){
     printf(" (rowset)");
diff --git a/test/affinity2.test b/test/affinity2.test
index acdf91c062..6ad257ac36 100644
--- a/test/affinity2.test
+++ b/test/affinity2.test
@@ -118,14 +118,19 @@ do_execsql_test 507 {
  
 # 2019-08-30 ticket https://www.sqlite.org/src/info/40812aea1fde9594
 #
-do_execsql_test 600 {
-  DROP TABLE IF EXISTS t0;
-  CREATE TABLE t0(c0 REAL UNIQUE);
-  INSERT INTO t0(c0) VALUES (3175546974276630385);
-  SELECT 3175546974276630385 < c0 FROM t0;
-} {1}
-do_execsql_test 601 {
-  SELECT 1 FROM t0 WHERE 3175546974276630385 < c0;
-} {1}
+# Due to some differences in floating point computations, these tests do not
+# work under valgrind.
+#
+if {![info exists ::G(valgrind)]} {
+  do_execsql_test 600 {
+    DROP TABLE IF EXISTS t0;
+    CREATE TABLE t0(c0 REAL UNIQUE);
+    INSERT INTO t0(c0) VALUES (3175546974276630385);
+    SELECT 3175546974276630385 < c0 FROM t0;
+  } {1}
+  do_execsql_test 601 {
+    SELECT 1 FROM t0 WHERE 3175546974276630385 < c0;
+  } {1}
+}
 
 finish_test
diff --git a/test/corruptM.test b/test/corruptM.test
index 0b9f5e4983..15fc8d6d0d 100644
--- a/test/corruptM.test
+++ b/test/corruptM.test
@@ -22,6 +22,16 @@ set testprefix corruptM
 #
 database_may_be_corrupt
 
+proc open_db2_and_catchsql {sql} {
+  set rc [catch { sqlite3 db2 test.db } msg]
+  if {$rc} {
+    return [list $rc $msg]
+  }
+  set res [catchsql $sql db2]
+  db2 close
+  set res
+}
+
 db close
 forcedelete test.db
 sqlite3 db test.db
@@ -38,165 +48,139 @@ do_execsql_test corruptM-101 {
   UPDATE sqlite_master SET tbl_name=NULL WHERE name='t1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 {} | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-102 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
-  } db2
+  }
 } {1 {malformed database schema (t1)}}
-db2 close
 
 do_execsql_test corruptM-110 {
   UPDATE sqlite_master SET tbl_name='tx' WHERE name='t1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 tx | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-111 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
-  } db2
+  }
 } {1 {malformed database schema (t1)}}
-db2 close
 do_execsql_test corruptM-112 {
   UPDATE sqlite_master SET tbl_name='t1', type='tabl' WHERE name='t1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {tabl t1 t1 | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-113 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
-  } db2
+  }
 } {1 {malformed database schema (t1)}}
-db2 close
 do_execsql_test corruptM-114 {
   UPDATE sqlite_master SET tbl_name='t9',type='table',name='t9'WHERE name='t1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t9 t9 | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-114 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
-  } db2
+  }
 } {1 {malformed database schema (t9)}}
-db2 close
 
 do_execsql_test corruptM-120 {
   UPDATE sqlite_master SET name='t1',tbl_name='T1' WHERE name='t9';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 T1 | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-121 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  } 
 } {0 {ok 111 222 333 15 22}}
-db2 close
 
 do_execsql_test corruptM-130 {
   UPDATE sqlite_master SET type='view' WHERE name='t1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {view t1 T1 | index i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-131 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (t1)}}
-db2 close
 
 do_execsql_test corruptM-140 {
   UPDATE sqlite_master SET type='table', tbl_name='t1' WHERE name='t1';
   UPDATE sqlite_master SET tbl_name='tx' WHERE name='i1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | index i1 tx | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-141 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (i1)}}
-db2 close
 
 do_execsql_test corruptM-150 {
   UPDATE sqlite_master SET type='table', tbl_name='t1' WHERE name='i1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | table i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-151 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (i1)}}
-db2 close
 
 do_execsql_test corruptM-160 {
   UPDATE sqlite_master SET type='view', tbl_name='t1' WHERE name='i1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | view i1 t1 | view v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-161 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (i1)}}
-db2 close
 
 do_execsql_test corruptM-170 {
   UPDATE sqlite_master SET type='index', tbl_name='t1' WHERE name='i1';
   UPDATE sqlite_master SET type='table', tbl_name='v2' WHERE name='v2';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | index i1 t1 | table v2 v2 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-171 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (v2)}}
-db2 close
 
 do_execsql_test corruptM-180 {
   UPDATE sqlite_master SET type='view',name='v3',tbl_name='v3' WHERE name='v2';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | index i1 t1 | view v3 v3 | trigger r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-181 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (v3)}}
-db2 close
 
 do_execsql_test corruptM-190 {
   UPDATE sqlite_master SET type='view',name='v2',tbl_name='v2' WHERE name='v3';
   UPDATE sqlite_master SET type='view' WHERE name='r1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | index i1 t1 | view v2 v2 | view r1 t1 |}
-sqlite3 db2 test.db
 do_test corruptM-191 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (r1)}}
-db2 close
 do_execsql_test corruptM-192 {
   UPDATE sqlite_master SET type='trigger',tbl_name='v2' WHERE name='r1';
   SELECT type, name, tbl_name, '|' FROM sqlite_master;
 } {table t1 t1 | index i1 t1 | view v2 v2 | trigger r1 v2 |}
-sqlite3 db2 test.db
 do_test corruptM-193 {
-  catchsql {
+  open_db2_and_catchsql {
     PRAGMA quick_check;
     SELECT * FROM t1, v2;
-  } db2
+  }
 } {1 {malformed database schema (r1)}}
-db2 close
 
 finish_test
diff --git a/test/fts4merge5.test b/test/fts4merge5.test
new file mode 100644
index 0000000000..1fad778b95
--- /dev/null
+++ b/test/fts4merge5.test
@@ -0,0 +1,58 @@
+# 2019 October 02
+#
+# 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 implements regression tests for SQLite library.  The
+# focus of this script is testing the FTS4 module.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix fts4merge5
+
+# If SQLITE_ENABLE_FTS3 is defined, omit this file.
+ifcapable !fts3 {
+  finish_test
+  return
+}
+
+source $testdir/genesis.tcl
+
+do_execsql_test 1.1 { 
+  CREATE TABLE t1(docid, words);
+}
+fts_kjv_genesis
+
+do_execsql_test 1.2 {
+  CREATE VIRTUAL TABLE x1 USING fts3; 
+  INSERT INTO x1(x1) VALUES('nodesize=64');
+  INSERT INTO x1(x1) VALUES('maxpending=64');
+}
+
+do_execsql_test 1.3 {
+  INSERT INTO x1(docid, content) SELECT * FROM t1;
+}
+
+for {set tn 1} {1} {incr tn} {
+  set tc1 [db total_changes]
+  do_execsql_test 1.4.$tn.1 {
+    INSERT INTO x1(x1) VALUES('merge=1,2');
+  }
+  set tc2 [db total_changes]
+
+  if {($tc2 - $tc1)<2} break
+
+  do_execsql_test 1.4.$tn.1 {
+    INSERT INTO x1(x1) VALUES('integrity-check');
+  }
+}
+
+
+
+finish_test
diff --git a/test/permutations.test b/test/permutations.test
index 8a86dd9ce5..55d544fc51 100644
--- a/test/permutations.test
+++ b/test/permutations.test
@@ -125,6 +125,7 @@ set allquicktests [test_set $alltests -exclude {
   walcrash2.test e_fkey.test backup.test
 
   fts4merge.test fts4merge2.test fts4merge4.test fts4check.test
+  fts4merge5.test
   fts3cov.test fts3snippet.test fts3corrupt2.test fts3an.test
   fts3defer.test fts4langid.test fts3sort.test fts5unicode.test
 
@@ -464,8 +465,8 @@ test_suite "coverage-analyze" -description {
   Coverage tests for file analyze.c.
 } -files {
   analyze3.test analyze4.test analyze5.test analyze6.test
-  analyze7.test analyze8.test analyze9.test analyzeA.test
-  analyze.test analyzeB.test mallocA.test
+  analyze7.test analyze8.test analyze9.test
+  analyze.test mallocA.test
 } 
 
 test_suite "coverage-sorter" -description {
@@ -643,7 +644,7 @@ test_suite "utf16" -description {
 } -files {
     alter.test alter3.test
     analyze.test analyze3.test analyze4.test analyze5.test analyze6.test
-    analyze7.test analyze8.test analyze9.test analyzeA.test analyzeB.test
+    analyze7.test analyze8.test analyze9.test
     auth.test bind.test blob.test capi2.test capi3.test collate1.test
     collate2.test collate3.test collate4.test collate5.test collate6.test
     conflict.test date.test delete.test expr.test fkey1.test func.test
diff --git a/test/releasetest.tcl b/test/releasetest.tcl
index 997e5eab9f..37f00eb4c0 100755
--- a/test/releasetest.tcl
+++ b/test/releasetest.tcl
@@ -412,6 +412,8 @@ proc count_tests_and_errors {logfile rcVar errmsgVar} {
       # skip over "value is outside range" errors
       if {[regexp {value .* is outside the range of representable} $line]} {
          # noop
+      } elseif {[regexp {overflow: .* cannot be represented} $line]} {
+         # noop
       } else {
         incr ::NERRCASE
         if {$rc==0} {
diff --git a/test/wapptest.tcl b/test/wapptest.tcl
index 5753455e2b..201078e78d 100755
--- a/test/wapptest.tcl
+++ b/test/wapptest.tcl
@@ -825,8 +825,13 @@ for {set i 0} {$i < [llength $argv]} {incr i} {
   }
 }
 
+wapptest_init
 for {set i 0} {$i < [llength $lTestArg]} {incr i} {
-  switch -- [lindex $lTestArg $i] {
+  set opt [lindex $lTestArg $i]
+  if {[string range $opt 0 1]=="--"} {
+    set opt [string range $opt 1 end]
+  }
+  switch -- $opt {
     -platform {
       if {$i==[llength $lTestArg]-1} { wapptest_usage }
       incr i
@@ -882,7 +887,6 @@ for {set i 0} {$i < [llength $lTestArg]} {incr i} {
   }
 }
 
-wapptest_init
 if {$G(noui)==0} {
   wapp-start $lWappArg
 } else {
diff --git a/test/without_rowid1.test b/test/without_rowid1.test
index 294b13c77a..23fae118e4 100644
--- a/test/without_rowid1.test
+++ b/test/without_rowid1.test
@@ -17,6 +17,10 @@ set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 set testprefix without_rowid1
 
+proc do_execsql_test_if_vtab {tn sql {res {}}} {
+  ifcapable vtab { uplevel [list do_execsql_test $tn $sql $res] }
+}
+
 # Create and query a WITHOUT ROWID table.
 #
 do_execsql_test without_rowid1-1.0 {
@@ -31,7 +35,7 @@ do_execsql_test without_rowid1-1.0 {
 
 integrity_check without_rowid1-1.0ic
 
-do_execsql_test without_rowid1-1.0ixi {
+do_execsql_test_if_vtab without_rowid1-1.0ixi {
   SELECT name, key FROM pragma_index_xinfo('t1');
 } {c 1 a 1 b 0 d 0}
 
@@ -119,7 +123,7 @@ do_execsql_test 2.1.2 {
   UPDATE t4 SET a = 'ABC';
   SELECT * FROM t4;
 } {ABC def}
-do_execsql_test 2.1.3 {
+do_execsql_test_if_vtab 2.1.3 {
   SELECT name, coll, key FROM pragma_index_xinfo('t4');
 } {a nocase 1 b BINARY 0}
 
@@ -135,7 +139,7 @@ do_execsql_test 2.2.2 {
   SELECT * FROM t4;
 } {xyz ABC}
 
-do_execsql_test 2.2.3 {
+do_execsql_test_if_vtab 2.2.3 {
   SELECT name, coll, key FROM pragma_index_xinfo('t4');
 } {a nocase 1 b BINARY 0}
 
@@ -146,7 +150,7 @@ do_execsql_test 2.3.1 {
   UPDATE t5 SET a='abc', b='def';
 } {}
 
-do_execsql_test 2.3.2 {
+do_execsql_test_if_vtab 2.3.2 {
   SELECT name, coll, key FROM pragma_index_xinfo('t5');
 } {b BINARY 1 a BINARY 1}
 
@@ -165,7 +169,7 @@ do_execsql_test 2.4.2 {
   SELECT * FROM t6 ORDER BY c;
 } {ABC def ghi ABC def ghi}
 
-do_execsql_test 2.4.3 {
+do_execsql_test_if_vtab 2.4.3 {
   SELECT name, coll, key FROM pragma_index_xinfo('t6');
 } {b BINARY 1 a nocase 1 c BINARY 0}
 
diff --git a/test/without_rowid6.test b/test/without_rowid6.test
index 4ad4d84576..567acfaed6 100644
--- a/test/without_rowid6.test
+++ b/test/without_rowid6.test
@@ -16,6 +16,10 @@
 set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 
+proc do_execsql_test_if_vtab {tn sql {res {}}} {
+  ifcapable vtab { uplevel [list do_execsql_test $tn $sql $res] }
+}
+
 do_execsql_test without_rowid6-100 {
   CREATE TABLE t1(a,b,c,d,e, PRIMARY KEY(a,b,c,a,b,c,d,a,b,c)) WITHOUT ROWID;
   CREATE INDEX t1a ON t1(b, b);
@@ -24,7 +28,7 @@ do_execsql_test without_rowid6-100 {
   INSERT INTO t1(a,b,c,d,e) SELECT i, i+1000, printf('x%dy',i), 0, 0 FROM c;
   ANALYZE;
 } {}
-do_execsql_test without_rowid6-101 {
+do_execsql_test_if_vtab without_rowid6-101 {
   SELECT name, key FROM pragma_index_xinfo('t1');
 } {a 1 b 1 c 1 d 1 e 0}
 do_execsql_test without_rowid6-110 {
@@ -54,7 +58,7 @@ do_execsql_test without_rowid6-200 {
   INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
   SELECT a FROM t1 WHERE b>3 ORDER BY b;
 } {4 1}
-do_execsql_test without_rowid6-201 {
+do_execsql_test_if_vtab without_rowid6-201 {
   SELECT name, key FROM pragma_index_xinfo('t1');
 } {b 1 a 0 c 0}
 do_execsql_test without_rowid6-210 {
@@ -111,7 +115,7 @@ do_execsql_test without_rowid6-500 {
   INSERT INTO t1(a,b,c) VALUES(1,8,3),(4,5,6),(7,2,9);
   SELECT a FROM t1 WHERE b>3 ORDER BY b;
 } {4 1}
-do_execsql_test without_rowid6-501 {
+do_execsql_test_if_vtab without_rowid6-501 {
   SELECT name, key FROM pragma_index_xinfo('t1');
 } {b 1 c 1 a 0}
 do_execsql_test without_rowid6-510 {
diff --git a/test/without_rowid7.test b/test/without_rowid7.test
index c75ceff35b..56e9fb40b9 100644
--- a/test/without_rowid7.test
+++ b/test/without_rowid7.test
@@ -15,6 +15,10 @@ set testdir [file dirname $argv0]
 source $testdir/tester.tcl
 set testprefix without_rowid7
 
+proc do_execsql_test_if_vtab {tn sql {res {}}} {
+  ifcapable vtab { uplevel [list do_execsql_test $tn $sql $res] }
+}
+
 do_execsql_test 1.0 {
   CREATE TABLE t1(a, b COLLATE nocase, PRIMARY KEY(a, a, b)) WITHOUT ROWID;
 }
@@ -36,13 +40,13 @@ do_execsql_test 2.1 {
 do_execsql_test 2.2a {
   PRAGMA index_info(t2);
 } {0 0 a 1 0 a}
-do_execsql_test 2.2b {
+do_execsql_test_if_vtab 2.2b {
   SELECT *, '|' FROM pragma_index_info('t2');
 } {0 0 a | 1 0 a |}
 do_execsql_test 2.3a {
   PRAGMA index_xinfo(t2);
 } {0 0 a 0 nocase 1 1 0 a 0 BINARY 1 2 1 b 0 BINARY 0}
-do_execsql_test 2.3b {
+do_execsql_test_if_vtab 2.3b {
   SELECT *, '|' FROM pragma_index_xinfo('t2');
 } {0 0 a 0 nocase 1 | 1 0 a 0 BINARY 1 | 2 1 b 0 BINARY 0 |}