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Author SHA1 Message Date
drh
7e62146b13 Faster and slightly smaller implementation of sqlite3Step(). 
FossilOrigin-Name: c6901a8c78838228f8135c9346b214e638b72086fd85367b9ff482273e62ece6
 2022-03-30 17:56:27 +00:00
drh
66f58bf38d Small size reduction and performance increase in sqlite3FinishCoding(). 
FossilOrigin-Name: 9248ce50f57fb9c4ba67949fdf9c9567c3e626cd9dd1b41b71c602d29c77c43e
 2022-03-30 17:36:40 +00:00
drh
c55b62d4cb In setResultStrOrError(), if the input string pointer is NULL and hence the 
value gets set to an SQL NULL, then the Mem.enc field is uninitialized.  So
do not read it.  This is a harmless OSSFuzz/ASAN found problem.

FossilOrigin-Name: 47d0b1c4cfc3d2d8f57a02079276bb70a205ffd0f18007dd39c92f813d4c87f5
 2022-03-29 22:57:00 +00:00
drh
4cb32b70ed Ensure that sqlite3VdbeMemSetStr() always leaves the value in a consistent 
state even if there is an error.

FossilOrigin-Name: c86ab289ec31ce9ae0abaf103a829b8d1e5ed632f493456f1f40607aeb91b41c
 2022-03-29 20:50:20 +00:00
drh
555db979f6 Reverse the order of two tests to stop a harmless initialized value 
warning from MSAN - reported by OSSFuzz.

FossilOrigin-Name: 800b8fdad73b67105e416b4b5c6a5c5ded7d6a43b4eacd6b67d690cab7584b0b
 2022-03-29 19:19:23 +00:00
drh
de9484858e Avoid unnecessary calls to balance() from sqlite3BtreeDelete(). 
FossilOrigin-Name: d0966d1bdd474e27cb048884d340184f0e81a4fab65eb6b74682b20630caddf8
 2022-03-29 13:16:32 +00:00
drh
fb92e07186 Fix the sqlite3_result_xxxxx() routines so that they all check for and 
perform any necessary text encoding conversions and check for oversize
strings and BLOBs.  Thus those checks can be done where they are most
efficient and avoided in cases like OP_Function where they are more
expensive.

FossilOrigin-Name: d50b162b2f2e320af0889b931351f9443580465a933f6657fa98f437b6579277
 2022-03-29 01:43:09 +00:00
drh
bcedbb2781 Further size and performance optimizations for sqlite3VdbeMemSetStr(). 
FossilOrigin-Name: 310a3e102d8eedf92ee63ffffb48621abfb1e2736b96bd2a676d63cca0f40598
 2022-03-28 18:34:40 +00:00
drh
f4dd18ea36 Slightly smaller and faster sqlite3VdbeMemSetStr(). 
FossilOrigin-Name: 06928e745c7bcb26ec46a17989f30efe3536fd48a74c8a1cd423cc9ff6feccb5
 2022-03-28 17:34:46 +00:00
drh
60a512d923 Performance increase in the loop that frees an opcode array. 
FossilOrigin-Name: 4ccebb86aae178dbce905d782f04d98211f8fce9aacd71c12b8694c92a4f5c40
 2022-03-28 15:06:36 +00:00
drh
cea170ec96 Another small performance gain by using sqlite3DbFreeNN(). 
FossilOrigin-Name: daa924af987253345bdb1c71b13378681bd252521e94d01f5d4629601232c352
 2022-03-28 14:56:47 +00:00
drh
da3ec15f3c Use sqlite3DbFreeNN() instead of sqlite3DbFree() in a few hot spots for 
better performance.

FossilOrigin-Name: b12de0ecc78a4f654c8e7b2b17cc2201688808a4f516908e9563a216677e655c
 2022-03-28 14:18:03 +00:00
drh
f5a8386c32 Performance optimization in the memsys5 memory allocator. 
FossilOrigin-Name: 949133231f8f751aa86518d0d3f6f03d7827fec085bfef3929fa3d57369d0216
 2022-03-28 13:22:54 +00:00
drh
be341502db Fix the Bloom-filter optimization so that it does not use IS NULL or 
IS NOT NULL constraints from the WHERE clause when operating on a LEFT JOIN.
[forum:/forumpost/031e262a89b6a9d2|Forum thread 031e262a89b6a9d2].

FossilOrigin-Name: 1a6328f2a5b4973094e5f85787145d652119822c86ec01a61f3f985c9d2903f2
 2022-03-25 01:23:37 +00:00
drh
5705b41fb8 The "PRAGMA writable_schema=ON" flag should not allow OOM errors to pass 
while parsing the schema.
dbsqlfuzz 9cc49e1a53e1cef8e3a1496a88c683aa20483163.

FossilOrigin-Name: a7abb725c7c783331e73837597917e25e5ff692aac8ec97a0a8c0e30db62d68b
 2022-03-24 14:01:55 +00:00
drh
8ad3c43257 Use trickery to code the UTF-8 BOM for the --bom option on .output, .once, 
and .excel in the CLI, to work around a warning in some Microsoft compilers.
[https://fossil-scm.org/forum/forumpost/bd0844268f0fab71|Fossil forum post bd0844268f0fab71].

FossilOrigin-Name: 43143ad131f17734fd2eff849e0a1bc2e26daf6a28c7e07d697d38732e6af5fc
 2022-03-23 10:04:52 +00:00
drh
500d7e542c Ensure that database corruption does not cause the cursor passed into 
sqlite3BtreeDelete() to be invalid.
dbsqlfuzz 209bf3de9ee11ae440848ab9bc9c13858f9be2e4.

FossilOrigin-Name: a85126f96614c53b030c6e6c43ff239eae458048597a10e9a0361fcec8628ecf
 2022-03-22 23:33:20 +00:00
drh
56d88aad29 Harden the xShmLock method of both the unix and Windows VFSes so that they 
are robust against being invoked when the SHM file is not open.

FossilOrigin-Name: 67d8b434f628d44c4a90ce8ff5ab2e381f500bb42bdbfab9a17d21925a2ec6cd
 2022-03-22 19:41:55 +00:00
drh
6fad5776c0 Make the sqlite3_serialize() and sqlite3_deserialize() interfaces accessible 
to loadable extensions.

FossilOrigin-Name: 81f8746bc65828fb91e170393f22f1f4e9c587a8938e8c11b72315fcd6131403
 2022-03-22 11:22:55 +00:00
larrybr
b5bb769c27 expose sqlite3_{deserialize,serialize}() in sqlite3ext.h 
FossilOrigin-Name: da874180d35aacdeb9c06f5b425e8909d833e2765179c4337854d56b8a624fd5
 2022-03-22 03:03:13 +00:00
larrybr
cb0854a380 Create new branch named "extapi-serializing" 
FossilOrigin-Name: a1220a2170a09075a42d1d6c4b502ffa7cc92856779b9eb2ecb9e05c09ccedac
 2022-03-22 02:53:34 +00:00
drh
a753a3a2be Do not allow an #ifdef inside of an assert(), as gcc tells us that is 
not portable.

FossilOrigin-Name: c7a2047e93df36c172be0be773f9a04150dafe7ba1773269d74016418d262fc4
 2022-03-21 20:08:13 +00:00
drh
c63e40956b Some branches are no longer reachable after the previous change. Mark them 
accordingly.  Also improve comments.

FossilOrigin-Name: 88d69f60cceb22bde42cfe43c23259c7bad47b8e06f918a79bd089a77b480d46
 2022-03-21 18:48:31 +00:00
drh
bd5fb3a888 Strengthen the defenses against corrupt databases in the 
sqlite3BtreeInsert() function of the btree module.
[forum:/forumpost/c7ec29905f|Forum post c7ec29905f].

FossilOrigin-Name: 4df301c8610c4c36b4eb360d49ccaef873c63ea719ccb14b357754ff0b3ea5ef
 2022-03-21 18:17:09 +00:00
drh
67aa2318c1 The previous assert() fix was not correct when building with 
-DSQLITE_ENABLE_OFFSET_SQL_FUNC.  This is the fix.

FossilOrigin-Name: c0a4767fef27cfe4fdc1d8a29342998095894769a63d84e37ec47ced7ce4e5f7
 2022-03-21 15:42:42 +00:00
drh
75c493f767 Fix the assert() that attempts to verify that the table-reference to 
index-reference translator finds all required translations.
[forum:/forumpost/929168fdd6|Forum post 929168fdd6].

FossilOrigin-Name: fa9bd1fce47e8db1cfc4cd8efd2c09f8711ea917ce7d116dc7226c575cb9a6d4
 2022-03-21 13:47:15 +00:00
drh
ef07f96faf Fix an assert() in sqlite3TableAffinity() that might have been false if there 
was a prior syntax error in the query.

FossilOrigin-Name: 23fdb169ca1622369cd44fd641946c37fef09071625838b3b9c86c31244ed205
 2022-03-21 11:32:45 +00:00
drh
9198f5afac In the CLI, disable the zipfile and sqlar extensions in --safe mode. 
FossilOrigin-Name: d8b65a2dab97392ff81bcc33ff707b4e626a10d84a258c6452e45f90cd2c7f45
 2022-03-19 15:19:35 +00:00
drh
d5c35f6d69 Fix the zipfile extension so that it knows that a zero-length BLOB returns 
a NULL pointer.
[forum:/forumpost/ae86934905|Forum post ae86934905].

FossilOrigin-Name: 5f6d56737caefa78e542a7af2f95646e3a818e0ecdd8e838f3c2978500ce960c
 2022-03-19 12:48:14 +00:00
drh
389e056bfe Change a conditional into an assert() due to the change in 
[387ab17b8a0a4b87].

FossilOrigin-Name: 13b584869f40ea6aa2190dbac64709695ee8d72b27bc5afb8b39ab3763b9c46a
 2022-03-17 23:49:58 +00:00
drh
b45e1d674a Add a 4th output code (value 3) from the sqlite3_vtab_distinct() interface 
that indicates that SQLite wants distinct results that are sorted.

FossilOrigin-Name: 135d8b97b01f9b5204f486f828c274c2d779c17723e79171ca61f738746adf8e
 2022-03-17 22:09:17 +00:00
drh
d6df8550b2 Updates a comment and an assert(). 
FossilOrigin-Name: 0c5be14aac07222b9cd2404ae485b6587f8cb2899e776bc45f1f1117bdd7e9b7
 2022-03-17 18:03:08 +00:00
drh
494317ad57 Another fix for a corner-case in sqlite_offset() - this one having to 
do with computed virtual columns in a WITHOUT ROWID table.

FossilOrigin-Name: 84ddd19bcec99f04b43b1a823477457758a2d93ea9beda43598e1234ea07776c
 2022-03-17 11:23:13 +00:00
dan
247d09462e Add extra test cases. 
FossilOrigin-Name: 0a922d141749cf3ef672f56449001e03f1a7e31822b66dcaf8550bb6e1b88cd3
 2022-03-16 19:28:18 +00:00
drh
2f3e34624a Update the sqlite3_vtab_distinct() documentation. 
FossilOrigin-Name: 88929d85e2ae81c51634ddb65ebec439958b63581016f9ccb4f5388715b3fe3f
 2022-03-16 14:51:35 +00:00
dan
ece092e728 Experimental change to have sqlite3_vtab_distinct() return 3 to indicate that results should sorted and duplicates may be removed. 
FossilOrigin-Name: 11f4508895c0a46d8623ca2f4f37b4f1b54b6d9022765f6124a9d42132f7d633
 2022-03-16 12:06:00 +00:00
larrybr
c6e2f2e64d Make CLI complain about incomplete input at EOF. Fix for regression reported at https://sqlite.org/forum/forumpost/718f489a43be3197 
FossilOrigin-Name: 72029cf7cdb266703cc8716102dbba8e6f2666e1f47409f42c39528795757b73
 2022-03-15 17:57:42 +00:00
drh
836652952f Calling sqlite3_value_dup() on a pointer value results in an ordinary 
NULL.  [forum:/forumpost/ae8592cc73|Forum post ae8592cc73].  Test cases
in TH3.

FossilOrigin-Name: fff1243b594c190d15f14b7ca4e60d23519cd15134f275991c685966fcc24145
 2022-03-14 23:50:38 +00:00
drh
d024eca323 Fix an assert() statement in the covering index optimization for the corner 
case of dealing with an sqlite_offset() SQL function call.

FossilOrigin-Name: 3950b7d006add571579158c751247a9435801e53eafd84b43dd3046e01da8ee6
 2022-03-14 22:58:04 +00:00
drh
1a25be1a9a Disable trigger coding while running sqlite3_declare_vtab(). 
dbsqlfuzz 97e1865771b4226f29e6e482411c1cae14133f50

FossilOrigin-Name: 387ab17b8a0a4b87903aab52abc7da79098b882aff2ab687a554d5794e9d183e
 2022-03-14 20:31:57 +00:00
drh
90402d4d54 Foreign key constraint failures should return SQLITE_CONSTRAINT_FOREIGNKEY 
even if there is a RETURNING clause.  See
[forum:/forumpost/e6be6e82c86aa59b|forum thread e6be6e82c86aa59b].

FossilOrigin-Name: 3f9887d4a58cbfdbabf2a37e975c81ba660f373414058920b379f3a81e6e1c2c
 2022-03-14 16:54:05 +00:00
drh
5a1f761218 Add a comment linking a part of the UPDATE constraint checking code to 
one of the corresponding TH3 test cases.

FossilOrigin-Name: 0606e8e93edb5de4d154f377dbf91f15295d25ca9013c0f1612ae6d63a0139ea
 2022-03-11 15:42:05 +00:00
drh
27e456458e Fix a harmless compiler warning. 
FossilOrigin-Name: 5d739aff96c47146dba72fd76fed62d4e43ded09b32246fdde13d5467f713135
 2022-03-11 15:16:50 +00:00
drh
605137aae6 Fix a harmless compiler warning and restore performance in the 
sqlite3BtreeIndexMoveto() last-page optimization.

FossilOrigin-Name: 8b032293b384c3728c27b0658ee634c028c0d231d067de8b747d2e9e4ae704a7
 2022-03-11 14:20:06 +00:00
dan
7ef4d75bd2 Fix a case in fts5 where a corrupt database could cause a crash. 
FossilOrigin-Name: 5e95df261cce275adb5b2226e9584f4c389bb0d53c3b4feafd5a14be8d02ce63
 2022-03-11 12:02:18 +00:00
drh
3946561a7f Another corruption detection case in the sqlite3BtreeIndexMoveto() 
last page optimization.

FossilOrigin-Name: 531e6ad0389c6c820bb8c64db5049fb6b0bffd30bd394fd8ee7412959b1752e2
 2022-03-10 23:37:58 +00:00
drh
463edb6275 In the sqlite3BtreeIndexMoveto() last-page optimization, make sure to return 
SQLITE_CORRUPT if corruption is detected.

FossilOrigin-Name: 4ef19ba9b5cbda435c0bb9f2faddf8f7fac5d51399ff69bd049571c2ca3d9357
 2022-03-10 22:54:32 +00:00
drh
fde3043200 Stronger defenses against corrupt schemas in the ALTER TABLE logic. 
FossilOrigin-Name: 13fbde28173332522a7ad307c1aad2b83c9aa1fe737583afa2b29f6da4de6370
 2022-03-10 21:04:49 +00:00
larrybr
551b650236 Amend sqlite3_column_*() doc table. (no code change) 
FossilOrigin-Name: 1f473099776249f774a285fa117316636e00c3ff030ba0f22ed5bd05641c1bc9
 2022-03-10 19:44:04 +00:00
drh
5e121a50b3 Prevent a NULL-pointer dereference when trying to parse a illegal 
schema entry that contains a window function while doing a RENAME COLUMN.
[forum:/forumpost/ec2a2e0deb|Forum post ec2a2e0deb].

FossilOrigin-Name: 58de3c2b1a773a71b2d6a5d9a4dc0f839185d78d64519e7d267ad133b9830120
 2022-03-10 16:26:00 +00:00