It does not work to deserialized into TEMP, so do not allow it. The

sqlite3_deserialize() routine now returns SQLITE_ERROR if you try.

FossilOrigin-Name: 18068cc60698d4944a9d682cdf34b14b4d4b32f043f8d584dbf41c2bb5ac6220

manifest

@@ -1,5 +1,5 @@
-C Fix\scompilation\sof\s'threadtest3'\sfor\ssome\solder\sversions\sof\sMSVC.
-D 2021-07-20T00:18:22.983
+C It\sdoes\snot\swork\sto\sdeserialized\sinto\sTEMP,\sso\sdo\snot\sallow\sit.\s\sThe\nsqlite3_deserialize()\sroutine\snow\sreturns\sSQLITE_ERROR\sif\syou\stry.
+D 2021-07-20T02:02:24.771
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -515,7 +515,7 @@ F src/mem1.c c12a42539b1ba105e3707d0e628ad70e611040d8f5e38cf942cee30c867083de
 F src/mem2.c b93b8762ab999a29ae7751532dadf0a1ac78040308a5fb1d17fcc365171d67eb
 F src/mem3.c 30301196cace2a085cbedee1326a49f4b26deff0af68774ca82c1f7c06fda4f6
 F src/mem5.c 9bf955937b07f8c32541c8a9991f33ce3173d944
-F src/memdb.c 2f2e8efc6e531c59cf8255f0bf4ad81f2e88e0a394581244154c8cf5141757ce
+F src/memdb.c 73622017aa03a3cabd1c4d6fca97eedada2155817dd0d74d6c1aeb42573b515d
 F src/memjournal.c a85f0dc5c02a42453d0bc3819ecfb5666cb6433e5deefcd93ccbe05c9f088b83
 F src/msvc.h 3a15918220367a8876be3fa4f2abe423a861491e84b864fb2b7426bf022a28f8
 F src/mutex.c 5e3409715552348732e97b9194abe92fdfcd934cfb681df4ba0ab87ac6c18d25
@@ -546,7 +546,7 @@ F src/resolve.c ea205123fba6bb254666f50b6c220270913eae54eb03d263abaa432c703f5857
 F src/rowset.c ba9515a922af32abe1f7d39406b9d35730ed65efab9443dc5702693b60854c92
 F src/select.c 0c783511b5f35b37d971dcd653c554d21f74d7cb63a4979991a61d068480c40f
 F src/shell.c.in 856de2945bb7fdfdeebe7136cf1b59d24618845aa5e5f3937fda7ff37c623b51
-F src/sqlite.h.in f716b8a9fb30c6928752fd75b3f824e8ac4d225d31494029dee8454aeb9aa01a
+F src/sqlite.h.in 43fcf0fe2af04081f420a906fc020bde1243851ba44b0aa567a27f94bf8c3145
 F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
 F src/sqlite3ext.h e97f4e9b509408fea4c4e9bef5a41608dfac343b4d3c7a990dedde1e19af9510
 F src/sqliteInt.h b3762f49d8b6b4bf7bf30d154f007d6f9421c86343042d7a246a79988d1fec1a
@@ -1191,7 +1191,7 @@ F test/malloctraceviewer.tcl b7a54595270c1d201abf1c3f3d461f27eaf24cdef623ad08a0f
 F test/manydb.test 28385ae2087967aa05c38624cec7d96ec74feb3e
 F test/mem5.test c6460fba403c5703141348cd90de1c294188c68f
 F test/memdb.test c1f2a343ad14398d5d6debda6ea33e80d0dafcc7
-F test/memdb1.test 7b76c3262d63c46dd6b408d18f5721071776f2df4ffeb11e668824e427127594
+F test/memdb1.test 1705e850e32969b61e19cbbc9d8a3ba3ba310092812d10948b8303394bf00f40
 F test/memjournal.test 70f3a00c7f84ee2978ad14e831231caa1e7f23915a2c54b4f775a021d5740c6c
 F test/memleak.test 10b9c6c57e19fc68c32941495e9ba1c50123f6e2
 F test/memsubsys1.test 9e7555a22173b8f1c96c281ce289b338fcba2abe8b157f8798ca195bbf1d347e
@@ -1920,7 +1920,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P f9c6426de3b413ff8fcf04a00931ca5f123f996c572b35181af114afa8d811d7
-R 4a4b4d7f4609ee7ad98f970aafca21aa
-U mistachkin
-Z d79e981ec4950b9bac6d5abcb02f1221
+P b5ede6a68891820bd5b6d051b1b641bc1cd49104cad2466db184134d14f58f5b
+R e22cd931ae144bced3e3587611f0e114
+U drh
+Z b4c2ab277c13106aeed921dd3a580a07

manifest.uuid

@@ -1 +1 @@
-b5ede6a68891820bd5b6d051b1b641bc1cd49104cad2466db184134d14f58f5b
+18068cc60698d4944a9d682cdf34b14b4d4b32f043f8d584dbf41c2bb5ac6220

src/memdb.c

@@ -809,7 +809,8 @@ int sqlite3_deserialize(
   sqlite3_mutex_enter(db->mutex);
   if( zSchema==0 ) zSchema = db->aDb[0].zDbSName;
   iDb = sqlite3FindDbName(db, zSchema);
-  if( iDb<0 ){
+  testcase( iDb==1 );
+  if( iDb<2 && iDb!=0 ){
     rc = SQLITE_ERROR;
     goto end_deserialize;
   }

src/sqlite.h.in

@@ -9923,6 +9923,10 @@ unsigned char *sqlite3_serialize(
 ** database is currently in a read transaction or is involved in a backup
 ** operation.
 **
+** It is not possible to deserialized into the TEMP database.  If the
+** S argument to sqlite3_deserialize(D,S,P,N,M,F) is "temp" then the
+** function returns SQLITE_ERROR.
+**
 ** If sqlite3_deserialize(D,S,P,N,M,F) fails for any reason and if the 
 ** SQLITE_DESERIALIZE_FREEONCLOSE bit is set in argument F, then
 ** [sqlite3_free()] is invoked on argument P prior to returning.

test/memdb1.test

@@ -195,6 +195,22 @@ do_test 620 {
   lappend rc $msg
 } {1 {wrong # args: should be "db serialize ?DATABASE?"}}
 
+# 2021-07-19 https://sqlite.org/forum/forumpost/e1cbb5f450b98aa6
+# The TEMP database cannot participate in serialization or
+# deserialization.
+#
+reset_db
+do_test 650 {
+  db eval {
+    CREATE TEMP TABLE t0(a);
+    CREATE TABLE t1(x);
+    WITH RECURSIVE c(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM c WHERE x<1000)
+    INSERT INTO t1(x) SELECT random() FROM c;
+  }
+  set rc [catch {db deserialize temp [db serialize main]} err]
+  lappend rc err
+} {1 err}
+
 #-------------------------------------------------------------------------
 ifcapable vtab {
   reset_db