diff --git a/manifest b/manifest
index 9b3331efef..5ede8a53d8 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Both\sjson_remove()\sjsonb_remove()\swork\son\spure\sJSONB\sas\slong\sas\sthe\sinput\nis\sJSONB.
-D 2023-11-15T20:32:06.379
+C Merge\sthe\slatest\strunk\senhancements\sand\sfixes\sinto\sthe\sjsonb\sbranch.
+D 2023-11-17T17:03:45.388
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -709,7 +709,7 @@ F src/os.h 1ff5ae51d339d0e30d8a9d814f4b8f8e448169304d83a7ed9db66a65732f3e63
 F src/os_common.h 6c0eb8dd40ef3e12fe585a13e709710267a258e2c8dd1c40b1948a1d14582e06
 F src/os_kv.c 4d39e1f1c180b11162c6dc4aa8ad34053873a639bac6baae23272fc03349986a
 F src/os_setup.h 6011ad7af5db4e05155f385eb3a9b4470688de6f65d6166b8956e58a3d872107
-F src/os_unix.c 0a33005e6426702c7e76f3d451f296c088693a95b2be28ba9ef59c8d8529ce6b
+F src/os_unix.c f8a557ff5b387ec599e8b84b7341e5a45ebdd579da03788364a34b9a9567faeb
 F src/os_win.c 4a50a154aeebc66a1f8fb79c1ff6dd5fe3d005556533361e0d460d41cb6a45a8
 F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
 F src/pager.c 987ab3a2cd9065d62e9955474470ff733445e2357432a67e3d0f5a8f9313e334
@@ -725,9 +725,9 @@ F src/printf.c 9da63b9ae1c14789bcae12840f5d800fd9302500cd2d62733fac77f0041b4750
 F src/random.c 606b00941a1d7dd09c381d3279a058d771f406c5213c9932bbd93d5587be4b9c
 F src/resolve.c d017bad7ba8e778617701a0e986fdeb393d67d6afa84fb28ef4e8b8ad2acf916
 F src/rowset.c 8432130e6c344b3401a8874c3cb49fefe6873fec593294de077afea2dce5ec97
-F src/select.c 503331aca8785254a7bf3d74ab338a99118fa297e1184a4dde33b3cdf7a9d341
+F src/select.c b3e8bb88f7a9572200fdb89cb1ef31605f45b7b2eb876d12d5102c068de905f0
 F src/shell.c.in 297625a1ba6ea1c08bc2ea1b838b646cad309b62bf08df0e379355629404f140
-F src/sqlite.h.in 4f841d3d117b830ee5ee45e8d89ceff1195f3ebb72d041ace8d116ba4c103b35
+F src/sqlite.h.in d93a4821d2f792467a60f7dc81268d1bb8634f40c31694ef254cab4f9921f96a
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h 3f046c04ea3595d6bfda99b781926b17e672fd6d27da2ba6d8d8fc39981dcb54
 F src/sqliteInt.h 6b82eb99a9d2887e873fb29e56befb7c50cf4624df615d23a28f071dc8abf5f6
@@ -795,11 +795,11 @@ F src/upsert.c fa125a8d3410ce9a97b02cb50f7ae68a2476c405c76aa692d3acf6b8586e9242
 F src/utf.c ee39565f0843775cc2c81135751ddd93eceb91a673ea2c57f61c76f288b041a0
 F src/util.c b22cc9f203a8c0b9ee5338a67f8860347d14845864c10248bebe84518a781677
 F src/vacuum.c 604fcdaebe76f3497c855afcbf91b8fa5046b32de3045bab89cc008d68e40104
-F src/vdbe.c 44bccc33ff8864b4b937be4d67ebb244e4f4e5ebc6d44832298954df6b7d6a78
+F src/vdbe.c 8b8e0c687e8dc355dfbdd40bf1cfa57effbaf3efeb0d634296d547c8549cc4ac
 F src/vdbe.h 41485521f68e9437fdb7ec4a90f9d86ab294e9bb8281e33b235915e29122cfc0
 F src/vdbeInt.h 949669dfd8a41550d27dcb905b494f2ccde9a2e6c1b0b04daa1227e2e74c2b2c
 F src/vdbeapi.c 8f57d60c89da0b60e6d4e272358c511f6bae4e24330bdb11f8b42f986d1bf21b
-F src/vdbeaux.c f3997b5956c8d97bd2fc3392db42caecddfa6549e9df82e0a7e5804653ca475a
+F src/vdbeaux.c b34dfbc09403ccb676608da16ff0780d23d466470563d24fdf6350b8d2271d5e
 F src/vdbeblob.c 13f9287b55b6356b4b1845410382d6bede203ceb29ef69388a4a3d007ffacbe5
 F src/vdbemem.c 0012d5f01cc866833847c2f3ae4c318ac53a1cb3d28acad9c35e688039464cf0
 F src/vdbesort.c 237840ca1947511fa59bd4e18b9eeae93f2af2468c34d2427b059f896230a547
@@ -807,7 +807,7 @@ F src/vdbetrace.c fe0bc29ebd4e02c8bc5c1945f1d2e6be5927ec12c06d89b03ef2a4def34bf8
 F src/vdbevtab.c 2143db7db0ceed69b21422581f434baffc507a08d831565193a7a02882a1b6a7
 F src/vtab.c 154725ebecd3bc02f7fbd7ad3974334f73fff76e02a964e828e48a7c5fb7efff
 F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
-F src/wal.c bba7db5dae3ffe2c6b9c173fc10be4b570b125e985cb5b95a6c22716213adde4
+F src/wal.c 69aa3ce60b2862a24cd86bb528e653e2137388ead258ef64db49ec9038807f5f
 F src/wal.h ba252daaa94f889f4b2c17c027e823d9be47ce39da1d3799886bbd51f0490452
 F src/walker.c 7c7ea0115345851c3da4e04e2e239a29983b61fb5b038b94eede6aba462640e2
 F src/where.c 1fdc69ce1333e9bd6d7d3df9fa5af1373a3f5bfdd52108d1dbc0ca85a55f777e
@@ -824,7 +824,7 @@ F test/aggnested.test ce85a6af7d59c3109e35c5f03b2cd11da1a9b1417371e2f942102d0f0d
 F test/aggorderby.test e6b98dbbf3ababa96892435d387de2dcf602ef02c2b848d2d817473066f154ba
 F test/alias.test 4529fbc152f190268a15f9384a5651bbbabc9d87
 F test/all.test 2ecb8bbd52416642e41c9081182a8df05d42c75637afd4488aace78cc4b69e13
-F test/alter.test 403a7f8842457044a994d0ffb42963d6e84fcfbf5e8f54556063b25d966cd454
+F test/alter.test 5d3c2a662c54362193b08961f6a65178c434905ec0fda8e0a86ebd99ea04d3cc
 F test/alter2.test a966ccfcddf9ce0a4e0e6ff1aca9e6e7948e0e242cd7e43fc091948521807687
 F test/alter3.test ffc4ab29ce78a3517a66afd69b2730667e3471622509c283b2bd4c46f680fba3
 F test/alter4.test 716caa071dd8a3c6d57225778d15d3c3cbf5e34b2e84ae44199aeb2bbf50a707
@@ -2142,8 +2142,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 8cb4d2cbfc1b5f3c612d85138e66da8735d6589c7538fdf494a761c9b8104f18
-R 17bf060181dd906a53600b2c931378c9
+P 68d551730be0a3ea9579646ed4836c73554c83ca7f2303b69a18843f1750f1a7 ce6a75622ea5bca517bc6613e738aa670c9e1dd863596220eded5c2379c616c7
+R 3f0ae99fa66c7ee3590aa56d01ed6b36
 U drh
-Z a169b712ea2dc449ca00887f2092a50b
+Z c061d55cfc7406269213a15ddaf22fe9
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index 94af86d981..475b441c30 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-68d551730be0a3ea9579646ed4836c73554c83ca7f2303b69a18843f1750f1a7
\ No newline at end of file
+162f0509ef27bcd3ec87629640281a71c773e7c3bbd2cd0df76faf481531e7f1
\ No newline at end of file
diff --git a/src/os_unix.c b/src/os_unix.c
index cd3e0fc54d..3171b41fd6 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -4054,7 +4054,13 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
 #ifdef SQLITE_ENABLE_SETLK_TIMEOUT
     case SQLITE_FCNTL_LOCK_TIMEOUT: {
       int iOld = pFile->iBusyTimeout;
+#if SQLITE_ENABLE_SETLK_TIMEOUT==1
       pFile->iBusyTimeout = *(int*)pArg;
+#elif SQLITE_ENABLE_SETLK_TIMEOUT==2
+      pFile->iBusyTimeout = !!(*(int*)pArg);
+#else
+# error "SQLITE_ENABLE_SETLK_TIMEOUT must be set to 1 or 2"
+#endif
       *(int*)pArg = iOld;
       return SQLITE_OK;
     }
@@ -4426,7 +4432,7 @@ static int unixShmSystemLock(
     f.l_len = n;
     res = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
     if( res==-1 ){
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+#if defined(SQLITE_ENABLE_SETLK_TIMEOUT) && SQLITE_ENABLE_SETLK_TIMEOUT==1
       rc = (pFile->iBusyTimeout ? SQLITE_BUSY_TIMEOUT : SQLITE_BUSY);
 #else
       rc = SQLITE_BUSY;
diff --git a/src/select.c b/src/select.c
index 2b28d9ca5e..f6a9526776 100644
--- a/src/select.c
+++ b/src/select.c
@@ -6372,10 +6372,11 @@ static void selectAddSubqueryTypeInfo(Walker *pWalker, Select *p){
   SrcList *pTabList;
   SrcItem *pFrom;
 
-  assert( p->selFlags & SF_Resolved );
   if( p->selFlags & SF_HasTypeInfo ) return;
   p->selFlags |= SF_HasTypeInfo;
   pParse = pWalker->pParse;
+  testcase( (p->selFlags & SF_Resolved)==0 );
+  assert( (p->selFlags & SF_Resolved) || IN_RENAME_OBJECT );
   pTabList = p->pSrc;
   for(i=0, pFrom=pTabList->a; i<pTabList->nSrc; i++, pFrom++){
     Table *pTab = pFrom->pTab;
diff --git a/src/sqlite.h.in b/src/sqlite.h.in
index 53c037c3ba..ce32b85b18 100644
--- a/src/sqlite.h.in
+++ b/src/sqlite.h.in
@@ -3954,15 +3954,17 @@ void sqlite3_free_filename(sqlite3_filename);
 ** </ul>
 **
 ** ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language
-** text that describes the error, as either UTF-8 or UTF-16 respectively.
+** text that describes the error, as either UTF-8 or UTF-16 respectively,
+** or NULL if no error message is available.
 ** (See how SQLite handles [invalid UTF] for exceptions to this rule.)
 ** ^(Memory to hold the error message string is managed internally.
 ** The application does not need to worry about freeing the result.
 ** However, the error string might be overwritten or deallocated by
 ** subsequent calls to other SQLite interface functions.)^
 **
-** ^The sqlite3_errstr() interface returns the English-language text
-** that describes the [result code], as UTF-8.
+** ^The sqlite3_errstr(E) interface returns the English-language text
+** that describes the [result code] E, as UTF-8, or NULL if E is not an
+** result code for which a text error message is available.
 ** ^(Memory to hold the error message string is managed internally
 ** and must not be freed by the application)^.
 **
diff --git a/src/vdbe.c b/src/vdbe.c
index 2b788e5e86..0cd345b241 100644
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -132,11 +132,12 @@ int sqlite3_found_count = 0;
 **   sqlite3CantopenError(lineno)
 */
 static void test_trace_breakpoint(int pc, Op *pOp, Vdbe *v){
-  static int n = 0;
+  static u64 n = 0;
   (void)pc;
   (void)pOp;
   (void)v;
   n++;
+  if( n==LARGEST_UINT64 ) abort(); /* So that n is used, preventing a warning */
 }
 #endif
 
diff --git a/src/vdbeaux.c b/src/vdbeaux.c
index 1d9921b193..114a759c9a 100644
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -211,10 +211,11 @@ static int growOpArray(Vdbe *v, int nOp){
 **   sqlite3CantopenError(lineno)
 */
 static void test_addop_breakpoint(int pc, Op *pOp){
-  static int n = 0;
+  static u64 n = 0;
   (void)pc;
   (void)pOp;
   n++;
+  if( n==LARGEST_UINT64 ) abort(); /* so that n is used, preventing a warning */
 }
 #endif
 
diff --git a/src/wal.c b/src/wal.c
index 655d78f591..d83f361d64 100644
--- a/src/wal.c
+++ b/src/wal.c
@@ -4204,10 +4204,9 @@ int sqlite3WalCheckpoint(
   if( pWal->readOnly ) return SQLITE_READONLY;
   WALTRACE(("WAL%p: checkpoint begins\n", pWal));
 
-  /* Enable blocking locks, if possible. If blocking locks are successfully
-  ** enabled, set xBusy2=0 so that the busy-handler is never invoked. */
+  /* Enable blocking locks, if possible. */
   sqlite3WalDb(pWal, db);
-  (void)walEnableBlocking(pWal);
+  if( xBusy2 ) (void)walEnableBlocking(pWal);
 
   /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
   ** "checkpoint" lock on the database file.
diff --git a/test/alter.test b/test/alter.test
index ee8e6c0b90..da562ce316 100644
--- a/test/alter.test
+++ b/test/alter.test
@@ -954,4 +954,21 @@ do_catchsql_test alter-20.3 {
   INSERT INTO t1(a) VALUES(45);
 } {1 {cannot store BLOB value in TEXT column t1.b}}
 
+# 2023-11-17 dbsqlfuzz e0900262dadd5c78c2226ad6a435c7f0255be2cd
+# Assertion fault associated with ALTER TABLE and an
+# aggregate ORDER BY within an unknown aggregate function.
+#
+reset_db
+do_execsql_test alter-21.1 {
+  CREATE TABLE t1(a,b,c,d);
+  CREATE TABLE t2(a,b,c,d,x);
+  CREATE TRIGGER r1 AFTER INSERT ON t2 BEGIN
+    SELECT unknown_function(a ORDER BY (SELECT group_concat(DISTINCT a ORDER BY a) FROM t1)) FROM t1;
+  END;
+  ALTER TABLE t2 RENAME TO e;
+} {}
+do_execsql_test alter-21.2 {
+  SELECT name, type FROM sqlite_schema ORDER BY name;
+} {e table r1 trigger t1 table}
+
 finish_test