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dandan
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Fix a bug causing the session module to dereference a NULL pointer when applying a corrupt changeset.
FossilOrigin-Name: e807d4e3798efd532b3d78d1dfe513ed4fbd3cb793dd0ae5c30cae6031422b10
1 parent ccf23da commit b869ed6

4 files changed

Lines changed: 52 additions & 10 deletions

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ext/session/session9.test

Lines changed: 42 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -324,5 +324,47 @@ do_test 6.3.2 { sqlite3_errcode db2 } {SQLITE_ERROR}
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do_test 6.4 {
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catchsql { INSERT INTO c1 VALUES(100, 200) } db2
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} {1 {no such table: main.p1}}
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db2 close
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#-------------------------------------------------------------------------
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reset_db
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do_execsql_test 7.0 {
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PRAGMA trusted_schema=OFF;
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PRAGMA foreign_keys=ON;
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CREATE TABLE t1(a INTEGER PRIMARY KEY, b, c, d);
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CREATE TABLE t2(e TEXT PRIMARY KEY NOT NULL, f, g);
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CREATE TABLE t3(w REAL PRIMARY KEY NOT NULL, x, y);
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CREATE TABLE t4(z PRIMARY KEY) WITHOUT ROWID;
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CREATE TABLE tc(a INTEGER, b INTEGER, c BLOB, d TEXT, PRIMARY KEY(a,b));
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CREATE TABLE wr(a TEXT, b INT, c, PRIMARY KEY(a,b)) WITHOUT ROWID;
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CREATE TABLE child(x INTEGER PRIMARY KEY, y INTEGER REFERENCES t1(a) ON DELETE CASCADE, z TEXT);
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INSERT INTO t1 VALUES(1,2,3,4),(2,3.5,'four',x'556677'),(3,NULL,'xyz',15),(4,'bubba',2147483648,0.0);
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INSERT INTO t1 SELECT a+4,c,d,b FROM t1;
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INSERT INTO t2 VALUES('x1y',2,3),('x2y','four',x'556677'),('x3y',NULL,'xyz');
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INSERT INTO t3 VALUES(1.1,'a','b'),(2.2,x'00ff','c');
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INSERT INTO t4 VALUES('alpha'),('beta'),('gamma');
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INSERT INTO tc VALUES(1,1,x'0102','one'),(1,2,x'0304','two'),(2,1,x'0506','three');
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INSERT INTO wr VALUES('a',1,'wa'),('b',2,'wb');
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INSERT INTO child VALUES(1,1,'c1'),(2,2,'c2');
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}
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set C [db one "SELECT unhex('
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54 0401 0200 0074 6300 1700 0100 0000
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0000 0000 0101 0000 0000 0069 0001 0402
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0102 0303 6f6e 6500 0004 2008 40a1 4c0b
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0d3f 3730 5d92 3f18 f2c9 66a6 4220 a873
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04cc 5281 ce5c d9d4 dc8b 7003 056f 6e65
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2d75 1700 0100 0002 5004 0100 0000 6d69
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7800 1700 0302 6b31 0409 1100
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', ' \n')"]
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proc conflict_handler {args} {
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return "OMIT"
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}
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do_test 7.1 {
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list [catch {sqlite3changeset_apply_v2 db $::C conflict_handler} msg] $msg
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} {1 SQLITE_CORRUPT}
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finish_test

ext/session/sqlite3session.c

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@@ -5048,7 +5048,7 @@ static int sessionApplyOneOp(
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for(i=0; rc==SQLITE_OK && i<nCol; i++){
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sqlite3_value *pOld = sessionChangesetOld(pIter, i);
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sqlite3_value *pNew = sessionChangesetNew(pIter, i);
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if( p->abPK[i] || (bPatchset==0 && pOld) ){
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if( pOld && (p->abPK[i] || bPatchset==0) ){
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rc = sessionBindValue(pUp, i*2+2, pOld);
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}
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if( rc==SQLITE_OK && pNew ){

manifest

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@@ -1,5 +1,5 @@
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C Check-in\s[7cf841f3613c8302]\swas\sincomplete\sin\sthat\sit\sdid\snot\sremove\nthe\sincorrect\sassert()\sstatement.\s\sFixed\shere.
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D 2026-05-20T11:53:15.865
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C Fix\sa\sbug\scausing\sthe\ssession\smodule\sto\sdereference\sa\sNULL\spointer\swhen\sapplying\sa\scorrupt\schangeset.
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D 2026-05-20T15:06:34.678
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F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
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F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -539,7 +539,7 @@ F ext/session/session4.test ad0ddaaddb9a99dac433d83fc6674aae2af072b8f57e63a6b3f2
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F ext/session/session5.test 716bc6fafd625ce60dfa62ae128971628c1a1169
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F ext/session/session6.test 35279f2ec45448cd2e24a61688219dc6cf7871757716063acf4a8b5455e1e926
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F ext/session/session8.test 326f3273abf9d5d2d7d559eee8f5994c4ea74a5d935562454605e6607ee29904
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F ext/session/session9.test 0c4a8fbe7a5031f50855f020f3408e1f07fd7859f1daa1629eadcec3422072d6
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F ext/session/session9.test ce2b898aa4caf0e492b57c29cb707224e0a33479e4f019785a81828273143ba5
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F ext/session/sessionA.test 1feeab0b8e03527f08f2f1defb442da25480138f
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F ext/session/sessionB.test c4fb7f8a688787111606e123a555f18ee04f65bb9f2a4bb2aa71d55ce4e6d02c
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F ext/session/sessionC.test 876d8726c1e9388a9ae3aca367d348c7ae30833aa9e877a9df7424d194f2e12e
@@ -573,7 +573,7 @@ F ext/session/sessionrowid.test 85187c2f1b38861a5844868126f69f9ec62223a03449a98a
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F ext/session/sessionsize.test 8fcf4685993c3dbaa46a24183940ab9f5aa9ed0d23e5fb63bfffbdb56134b795
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F ext/session/sessionstat1.test 5e718d5888c0c49bbb33a7a4f816366db85f59f6a4f97544a806421b85dc2dec
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F ext/session/sessionwor.test 6fd9a2256442cebde5b2284936ae9e0d54bde692d0f5fd009ecef8511f4cf3fc
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F ext/session/sqlite3session.c d2889e6d96890068d2638bc7010d0f96e71b8eae31345e126775edd0821a99a1
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F ext/session/sqlite3session.c aa0e9491a70647487daadb04bd59c998922112ee4f3c449814c7e3a26a9d43db
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F ext/session/sqlite3session.h 063e7bf7be2fff874456f452a224b5b3013b25682d108933b0351c93a1279b9c
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F ext/session/test_session.c 3773e750b5c751956fdbef41a998cc1ba02d59c3dede74e75866e3446a900e69
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F ext/wasm/GNUmakefile 65feef4ec48e62249f90278c4c08a3fe3c69e2461ff560b61c03cd73606e0949
@@ -2205,8 +2205,8 @@ F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee
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F tool/warnings.sh a554d13f6e5cf3760f041b87939e3d616ec6961859c3245e8ef701d1eafc2ca2
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F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
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F tool/winmain.c 00c8fb88e365c9017db14c73d3c78af62194d9644feaf60e220ab0f411f3604c
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P 20110547a117912be68d91bc006e92c45beffde16c6bcdf062bf8971c9a9a864
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R 67509f4148b02e5461ab558080d99e3d
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U drh
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Z b786c3ef36d59ec3f899e528c54a2488
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P c19bacca13f699953bbf50afb867035a94080b8a48111cf3d87bced880a3e620
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R 43c5e4df42aec59712218bda1894b5cd
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U dan
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Z 79c02272bbab5a6ffd70a5205b553513
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# Remove this line to create a well-formed Fossil manifest.

manifest.uuid

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c19bacca13f699953bbf50afb867035a94080b8a48111cf3d87bced880a3e620
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e807d4e3798efd532b3d78d1dfe513ed4fbd3cb793dd0ae5c30cae6031422b10

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