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111 events for the month beginning 2021-04-01 by user drh

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2021-04-30
16:12
Guard against a NULL-pointer dereference following OOM in the JSON extension. (check-in: ea221f3c user: drh tags: trunk)
12:30
Fix a harmless "unused variable" warning when compiling with -DSQLITE_COVERAGE_TEST. (check-in: 0bef3fb1 user: drh tags: trunk)
2021-04-29
18:03
Fix the operation of the "-" argument to --load-dbsql in the fuzzcheck program. (check-in: 1f18b3cb user: drh tags: trunk)
15:49
Fix the IN-early-out optimization so that it works even for the corner case where the NULL bypass fires before the affinity of the LHS operator has been set. Fix for the problem described in forum post 6a3ec138e9. (check-in: eb40248c user: drh tags: trunk)
13:58
Enhanced "PRAGMA vdbe_trace=on" output associated with the seekHit flag. (check-in: 68395000 user: drh tags: trunk)
13:37
Fix harmless compiler warnings. See forum post 256140e470. (check-in: 1b8da792 user: drh tags: trunk)
10:48
Update test/fuzzdata8.db with recent dbsqlfuzz finds. (check-in: bce2ea39 user: drh tags: trunk)
2021-04-28
17:37
Ignore the TEMP or TEMPORARY keyword on CREATE statements which parsing the schema out of an existing database file. Those keywords should never be there. This change simply adds robustness in case a legacy or damaged database is seen. (check-in: 65ec39f0 user: drh tags: trunk)
15:43
Adjust a VDBE coverage macros due to the enhancement at [506333742103c1f4]. (check-in: daed59b4 user: drh tags: trunk)
2021-04-27
17:18
Further improvements to the handling of RETURNING clauses on changes to TEMP tables with triggers. dbsqlfuzz 683913e98f54fe4f14e8dd11a48011f73bdca58d (check-in: ff3538ae user: drh tags: trunk)
13:04
RETURNING bug fix: Correctly deal with RETURNING statements on changes to TEMP tables that also have triggers. dbsqlfuzz 78b9400770ef8cc7d9427dfba26f4fcf46ea7dc2 (check-in: d0b15ecc user: drh tags: trunk)
00:05
Better error messages on showdb. (check-in: 7e18e114 user: drh tags: trunk)
2021-04-26
23:57
Improved robustness of the "showdb" debugging program when it is parsing corrupt database files. (check-in: 3eabac2e user: drh tags: trunk)
22:30
New dbsqlfuzz cases added to test/fuzzdata8.db. (check-in: 88d20500 user: drh tags: trunk)
21:23
Fix the UNION ALL flattener optimization so that it works better with recursive CTEs. dbsqlfuzz 88ed5c66789fced139d148aed823cba7c0926dd7 (check-in: f80d7bb2 user: drh tags: trunk)
21:00
Add ALWAYS() to branches that are no longer reachable due to recent enhancements. (check-in: 63c50fbd user: drh tags: trunk)
15:28
More aggressive detection of OOM errors in resolveAlias(). dbsqlfuzz 7f96832c2ef7ee472022ed805b064e55e41094b2 (check-in: e99faf4f user: drh tags: trunk)
14:32
When doing the optimization that attempts to avoid sorting on a GROUP BY, do not assume that the values in an index on an expression are non-NULL. Bug discovered by Wang Ke's fuzzer and reported at forum post 74330094d8. (check-in: 7178dc3a user: drh tags: trunk)
2021-04-24
23:40
Make window range queries more robust against corrupt database files. dbsqlfuzz f22df3a7b2aab0937a415484514fc2f68a293c99. (check-in: 50633374 user: drh tags: trunk)
12:24
Treat byte-order marks (BOMs) at the start of a token as whitespace. This enhancement is inspired by forum post ed8f696a20. (check-in: 3d55c21c user: drh tags: trunk)
12:20
Fix testcase altertab-25.1 due to check-in [c7909e8e0d0577c6] disallowing ALTER TABLE on eponymous virtual tables. (check-in: 32255e39 user: drh tags: trunk)
2021-04-23
13:57
Fix harmless compiler warnings in fuzzcheck. (check-in: e7b4ffec user: drh tags: trunk)
13:43 Closed ticket [c66298e2]: Inconsistent iterations of WhereClause->nTerm plus 6 other changes (artifact: e3978f19 user: drh)
12:58
Enhance the --load-dbsql and related options of fuzzcheck so that if the argument is a single - then filenames are read from standard input. (check-in: e1548802 user: drh tags: trunk)
12:16
Give a better final output line for the --spinner option on fuzzcheck. (check-in: 93729614 user: drh tags: trunk)
11:50
New dbsqlfuzz cases added to test/fuzzdata8.db. (check-in: 8da88508 user: drh tags: trunk)
00:59
Improved OOM detection in sqlite3ExprCheckIN(). dbsqlfuzz 46ae2d8f473ac672f3042cc14ab67aeab9ffa6c2 (check-in: fac12115 user: drh tags: trunk)
2021-04-22
20:01
Change a memcpy() into a memmove() to prevent a warning about overlapping regions passed to memcpy() in case of some obscure and unlikely database corruption. (check-in: bab132cb user: drh tags: trunk)
19:34
Fix harmless compiler warnings of unused function parameters in FTS5. (check-in: 14273915 user: drh tags: trunk)
18:02
Raise an error on an attempt to rename an eponymous virtual table. (check-in: c7909e8e user: drh tags: trunk)
16:54
Improved handling of errors in ALTER TABLE RENAME. dbsqlfuzz 3e3e2e076e53d02288f80af41a11143a6ddf8c88 (check-in: 9c7a449f user: drh tags: trunk)
14:43
Fix the date/time translation logic in the zipfile extension so that it works with boundary cases. See forum post d82289d69f for the trouble report. (check-in: c8de5f06 user: drh tags: trunk)
13:59
Ensure that the typedefs for specific-length integers in zipfile.c are correct. (check-in: f1f2a490 user: drh tags: trunk)
12:38
In the whereLoopXfer() routine, ensure that the destination is fully initialized even if an OOM error occurs. (check-in: c4258708 user: drh tags: trunk)
2021-04-21
23:13
The new OP_Null opcode from check-in [8b54102a00852b72] was not coded correctly. This check-in attempts to fix that. (check-in: 02af30aa user: drh tags: trunk)
12:03
Add recent dbsqlfuzz test cases to test/fuzzdata8.db. (check-in: 6fe50dcc user: drh tags: trunk)
11:58
Initialize the key registers in the skip-scan optimization to NULL, in case the query is run on a corrupt database that causes the initialization of the key to be bypassed. dbsqlfuzz 62fdf2bece00d24cac8a4edf2cf562e6eeac779d (check-in: 8b54102a user: drh tags: trunk)
2021-04-20
22:48
Remove a testcase() that is no longer relevant due to the previous check-in. (check-in: ca70c8ac user: drh tags: trunk)
20:48
More aggressive detection of database corruption in the rebuildPage() routine. (check-in: a18c6506 user: drh tags: trunk)
12:14
In the sqlite3SelectDup() routine, do not do an incomplete duplication due to OOM. This in turn requires several new NEVER() and ALWAYS() macros for unreachable branches. (check-in: a61c0e6b user: drh tags: trunk)
01:46 Edit [8f339f430020c4b1|8f339f43]: Move to branch mistake. Mark "Closed". Edit check-in comment. (artifact: 920ee973 user: drh)
00:09
Add two ALWAYS() macros for branches no longer reachable due to the previous check-in. Later: Dbsqlfuzz quickly found ways to make both of these ALWAYS() conditionals false. (Closed-Leaf check-in: 8f339f43 user: drh tags: mistake)
2021-04-19
20:36
Improvement to check-in [d564d8882ef18b55] to detect the OOM fault even if it occurs deep down inside the duplicated expression. (check-in: 3e863cd0 user: drh tags: trunk)
19:59
An improvement to check-in [1a341378ab24a509] that omits the new Walker.bWalkWinDefn boolean (which is not always initialized) and uses a special value for xSelectCallback2 instead. (check-in: bef2238d user: drh tags: trunk)
19:07
Merge in the 3.35.5 patches. (check-in: 35d1c9a5 user: drh tags: reuse-schema-3.35)
18:32
Version 3.35.5 (check-in: 1b256d97 user: drh tags: release, branch-3.35, version-3.35.5)
18:03
Ensure that a WITHOUT ROWID table does not have the .iPKey field set, even if an OOM error occurs while parsing a schema in PRAGMA writable_schema=ON mode. Add extra assert() statements to triple-check that this never happens. dbsqlfuzz 803bb1f63d6f3bd6c14db568494d6e96be8f1ec9. (check-in: 41228350 user: drh tags: trunk)
15:05
In the query flattener, avoid invalidating an expression if an OOM occurs. This prevents problems in higher-level routines that might not check for the OOM after processing a subquery. dbsqlfuzz fb70fa8602421f87673e0670b0712ff2b5240ea0 (check-in: d564d888 user: drh tags: trunk)
12:18 Edit [f375f541efee5200|f375f541]: Edit check-in comment. (artifact: 0ef786a6 user: drh)
12:05
Update the version number to 3.35.5. (check-in: d917b70a user: drh tags: branch-3.35)
2021-04-17
18:39
Add new dbsqlfuzz cases to test/fuzzdata8.db. (check-in: d18793e5 user: drh tags: trunk)
13:46
Ensure that variables are not used in the WINDOW clause of a query inside of a trigger. dbsqlfuzz d9cf66100064952b66951845dfab41de1c124611 (check-in: 1a341378 user: drh tags: trunk)
2021-04-16
22:53
Performance optimizations in the code generator, especially in name resolution. (check-in: ab83a998 user: drh tags: trunk)
19:25
Add new dbsqlfuzz-generated cases to test/fuzzdata8.db. (check-in: 1ac0a056 user: drh tags: trunk)
12:33
Remove an ALWAYS() from a branch in sqlite3ExprAddCollateToken() which can be false following an OOM. dbsqlfuzz 9e8516bf1e786c84e520ae43141b75b7399f8618. (check-in: 6af4e6d0 user: drh tags: trunk)
12:13
Fix an assert() in whereLoopAddOr() that can be wrong if an OOM occurs in an OR constraint on a virtual table if one of the terms of the OR is an IN operator. dbsqlfuzz 5ee7350b40014f5a878c5d6e76913a2d619f5146 (check-in: 5cb40e53 user: drh tags: trunk)
11:05
Fix the comment on the implementation of the pi() SQL function. No changes to code. (check-in: 5620bd46 user: drh tags: trunk)
01:03
Do not invoke sqlite3ExprAffinity() if there is a possibility that the Expr is incomplete due to a prior OOM. dbsqlfuzz b8a824706914488bd236da51118eb9174ceb870f (check-in: e8a1515b user: drh tags: trunk)
2021-04-15
19:20 Edit [2363a14ca723c034|2363a14c]: Edit check-in comment. (artifact: ef63f9e6 user: drh)
12:56
Make sure the WhereInfo.pExprMods list is properly cleared when existing sqlite3WhereBegin() early due to an OOM fault. dbsqlfuzz 1247a51318047aba42e7f6991dfa62577cb7a151. (check-in: 0e19af72 user: drh tags: trunk)
2021-04-14
11:20
Fix an assert() in the code generator for expressions so that it is valid even after an OOM. (check-in: 427e83eb user: drh tags: trunk)
2021-04-13
18:39
Fix a problem with handling expressions like "(col IS NULL AND <expr1>) OR col == NULL" in WHERE clauses. Reported at https://sqlite.org/forum/forumpost/1c4f2fdcc4. (check-in: e8c7bd34 user: drh tags: branch-3.35)
13:48
Do not leave a WITHOUT ROWID table without a primary key index structure due to an OOM error. This prevents downstream troubles in the case of PRAGMA writable_schema=ON. dbsqlfuzz 69fb32cc82d59b4d790881566e3f6c727e616122 (check-in: 608b6644 user: drh tags: trunk)
13:20
The SQLITE_NoSchemaError flag should not apply to OOM errors while parsing the schema. (check-in: 9cc484ad user: drh tags: trunk)
13:01
Earlier detection empty_result_callbacks in sqlite3InitCallbac() to avoid problems with corrupt schemas an writable_schema=ON. dbsqlfuzz ca4ca43bdb22eab9859de4979aec615af851e111. (check-in: fb305fe0 user: drh tags: trunk)
12:28
In the rtreedepth() function, detect OOM when converting a zeroblob() on input. dbsqlfuzz ed23eda7cc3a8a054f85ea19d55c59ba2ca72744. (check-in: 69f843c8 user: drh tags: trunk)
01:12
Fix an error in the inversion function for json_group_array(). dbsqlfuzz 68a4b0f668b7bc27235e3f1c5cff8a2d94cfa17e. (check-in: e718a62e user: drh tags: trunk)
2021-04-12
23:18
Fix a faulty assert() inside sqlite3ExprDup(). (check-in: 59812e7e user: drh tags: trunk)
22:39
Fix an assert() in OP_ParseSchema so that it works even after an OOM. (check-in: 79b88353 user: drh tags: trunk)
18:32
Avoid taking the address of a NULL pointer following an OOM in FTS5. Doing so is harmless in actual practice, but it technically UB so we want to avoid it. (check-in: 1cfcd9dc user: drh tags: trunk)
17:34
Add an assert() to show that the SF_Resolved flag does not get set if errors are being suppressed. (check-in: f455c5b0 user: drh tags: trunk)
12:58
Fix the display of SrcList in the sqlite3TreeView debugging routines. (check-in: 28ecb381 user: drh tags: trunk)
11:51
Fix harmless comment typo in main.c. (check-in: 785a553e user: drh tags: trunk)
2021-04-11
00:11
Add NEVER() to a branch that is no longer reachable due to check-in [a1d823f6879ce1ac]. (check-in: 5fda21fe user: drh tags: trunk)
2021-04-10
20:21
Add NEVER() to a branch that became unreachable with check-in [58f36af2271517ab]. (check-in: e07ce463 user: drh tags: trunk)
15:34
Avoid invoking sqlite3Atoi64() will a null pointer following an error from ExpandBlob(). (check-in: 780412f2 user: drh tags: trunk)
13:37
Refactor NameContext.nErr into nNcErr to avoid confusion with Parse.nErr. Do not abandon sqlite3ResolveExprList() on nNcErr if nErr is still zero as we might have hit a problem with ORDER BY resolution that should be a suppressed error. dbsqlfuzz 41b9dad40919d3549ca7e52d893da81a6dded4ad (check-in: 7d674970 user: drh tags: trunk)
2021-04-09
22:36 Edit [c174f5d32b8c6bba|c174f5d3]: Edit check-in comment. (artifact: 542dfcd8 user: drh)
22:34
Remove a NEVER() in a corruption detection conditional in defragmentPage(). dbsqlfuzz 9c61c33802600b2b01dfb09b0386ceb4ade02a19 (check-in: c174f5d3 user: drh tags: trunk)
22:20
Remove an ALWAYS() that is actually reachable following an OOM on an UPDATE FROM of a virtual table. dbsqlfuzz aa03237ef7c4a028c7cdaf8bbcde2b62e2bcd36e (check-in: 49eac389 user: drh tags: trunk)
2021-04-08
19:56
Remove an ALWAYS() that might be false under very unusual circumstances. dbsqlfuzz 300261f469ace7ecc57ed32ea7b0de3ea9d7dbf. Test case in TH3. (check-in: 466f5089 user: drh tags: trunk)
14:15
Harden the filter_over grammar rule against OOM faults. dbsqlfuzz e47c54502a9c36778a5ed553199d5870e2ebd9f2 (check-in: f375f541 user: drh tags: trunk)
13:52
Remove an incorrect assert() from sqlite3EndTable(). dbsqlfuzz 4af45bcda779592449b1985433bca90b0e683b9b. (check-in: 38a1085c user: drh tags: trunk)
13:41
Fix an obscure memory leak in FTS3. dbsqlfuzz 26a51001beeff35649d2e328b05ec06f93c577a5 (check-in: be7cd9eb user: drh tags: trunk)
2021-04-07
18:17
Do not allow the use of rowid for views and subqueries unless compiled with -DSQLITE_ALLOW_ROWID_IN_VIEW. (check-in: a2ddb89b user: drh tags: trunk)
18:08
Add the SQLITE_ALLOW_ROWID_IN_VIEW option to omitttest.tcl. (Closed-Leaf check-in: 83b8e4c2 user: drh tags: no-rowid-on-view)
15:45
Also prohibit the use of rowid from a subquery. Add the SQLITE_ALLOW_ROWID_IN_VIEW compile-time option to restore legacy behavior in case somebody actually needs it. (check-in: 14b1d56e user: drh tags: no-rowid-on-view)
13:20
Unnecessary local variable initialization to fix a harmless compiler warning. (check-in: c22e47c7 user: drh tags: trunk)
12:59
In FTS3, if the xBegin method fails to start a transaction due to an OOM error, then make sure that the virtual table is left in a consistent state. dbsqlfuzz 85ef48423fda4eef79a551654445d8ef3537a590. (check-in: dd553578 user: drh tags: trunk)
12:36
Fix an assert in the automatic-index constructor that can be false following an OOM error. dbsqlfuzz ee04d66c627ed5b5301e0ce09e24db47e0f1544e. (check-in: cc6463fe user: drh tags: trunk)
12:21
Earlier detection of page 1 on the freelist (which is impossible) and reporting of that as database corruption. dbsqlfuzz 6fe6c504b320be5e3eed66896cb0db28bfb38a93. (check-in: b1bf0d98 user: drh tags: trunk)
2021-04-06
23:29
Do not apply the optimization that omits DISTINCT if all result terms are part of a UNIQUE index if the index is also a partial index. Fix for the bug reported by forum post 66954e9ece. (check-in: c2f940b0 user: drh tags: trunk)
22:56
Detect OOM earlier in the geopoly extension. dbsqlfuzz 0986e7b020e6137fc6b96331f91d15753d18e42d. (check-in: 72371175 user: drh tags: trunk)
19:13
Raise an error if a query tries to access the "rowid" of a view, as views do not have rowids. (check-in: 7a73c616 user: drh tags: no-rowid-on-view)
16:55
New test cases added to fuzzdata8.db. (check-in: 039ad662 user: drh tags: trunk)
13:56
Earlier detection of OOM errors during window function processing. dbsqlfuzz b08676f5a0437552c95d2a5d7ef285f8c451ea35. (check-in: 8e04f52e user: drh tags: trunk)
13:03
Further improvements (subsequent to [d91450847a3a3a72]) to handling of attempts to delete a journal using the memdb VFS. dbsqlfuzz ac61dab357279a6a531de067f040e9a4828d2df0. (check-in: a0839406 user: drh tags: trunk)
12:50
Earlier detection and handling of OOM problems. dbsqlfuzz 39f2963ea5559aa3a16e24e0e3cb42aac85a7371. (check-in: 8d46df73 user: drh tags: trunk)
2021-04-05
22:42
Relax an assertion on the sqlite3WhereEnd() routine after dbsqlfuzz found a counter-example. (check-in: e6b591e7 user: drh tags: trunk)
22:30
Add a missing CORRUPT_DB to an assert in the OP_ResultRow opcode. (check-in: 82f92d79 user: drh tags: trunk)
19:23
Adjust the README.md file so that build instructions work for Fossil version 2.12 and later. Forum post 51f28bb701. (check-in: 51f87adc user: drh tags: trunk)
17:50
Fix an assert() that can be false when doing an incremental vacuum on a corrupt database file. dbsqlfuzz cced0668cfd4da4eb2382cb9dd26c17c64aaff76. (check-in: 15b80101 user: drh tags: trunk)
13:41
Do not invoke the xDelete method when converting to PRAGMA journal_mode=OFF if the underlying VFS does not support that method. dbsqlfuzz 39d6af88ef5242f866c4f9b21ede330c5c1e36a8. (check-in: d9145084 user: drh tags: trunk)
11:39
As a continuation of [1f66a85b7757754f], ensure that an OOM that occurs while checking the validity of the schema is reported out as SQLITE_NOMEM and not as SQLITE_SCHEMA. (check-in: 5045c8a7 user: drh tags: trunk)
2021-04-04
23:56
Fix an assert() in sqlite3BtreeLast() that needs an "|| CORRUPT_DB" term. Dbsqlfuzz case b92b72e4de80b5140c30ab71372ca719b8feb618. (check-in: ad718388 user: drh tags: trunk)
2021-04-03
23:30
Improved robustness to OOM conditions in the window function logic. dbsqlfuzz 0c123f7d80b29beaafc8411c12129e46f7ffdac3. (check-in: 35ff7cbf user: drh tags: trunk)
20:35
Take care not to change an SQLITE_NOMEM error into SQLITE_SCHEMA. (check-in: 1f66a85b user: drh tags: trunk)
2021-04-02
20:43
Correctly capture the error when a RETURNING clause appears on an attempt to UPDATE an eponymous virtual table. dbsqlfuzz 486f791cbe2dc45839310073e71367a1d8ad22dd. (check-in: 778a9a6e user: drh tags: trunk)
18:59
Fix a problem with the geopoly_bbox() function. (check-in: f3a2eb97 user: drh tags: trunk)
11:59
Fix incorrect RETURNING test cases in wherelimit.test (check-in: 64b0eb7e user: drh tags: branch-3.35)
2021-04-01
11:30
When resolving names in the RETURNING clause, do not accept trigger names even within subquires. (check-in: 8541c71b user: drh tags: branch-3.35)
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