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Overview
Comment: | Fix a couple of crashes in fts3 that can occur if the database contents are inconsistent. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
811e12cddfb3246c6cf3d5085bd9b72b |
User & Date: | dan 2011-01-13 11:20:04.000 |
Context
2011-01-13
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16:10 | Fix a typo on the sqlite3_open_v2() documentation. (check-in: b0add45abc user: drh tags: trunk) | |
11:20 | Fix a couple of crashes in fts3 that can occur if the database contents are inconsistent. (check-in: 811e12cddf user: dan tags: trunk) | |
10:58 | Fix a segfault that can occur in matchinfo if an fts4 table contains mostly zero-length documents. Specifically, if the table contains more rows than it does bytes of text. (check-in: fe9047668e user: dan tags: trunk) | |
Changes
Changes to ext/fts3/fts3_write.c.
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1098 1099 1100 1101 1102 1103 1104 | ** varints, where nCol is the number of columns in the FTS3 table. ** The first varint is the number of documents currently stored in ** the table. The following nCol varints contain the total amount of ** data stored in all rows of each column of the table, from left ** to right. */ sqlite3_stmt *pStmt; | < < < | | > > > | | | | | | | | > > > | > | | < | | 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 | ** varints, where nCol is the number of columns in the FTS3 table. ** The first varint is the number of documents currently stored in ** the table. The following nCol varints contain the total amount of ** data stored in all rows of each column of the table, from left ** to right. */ sqlite3_stmt *pStmt; sqlite3_int64 nDoc = 0; sqlite3_int64 nByte = 0; const char *a; rc = sqlite3Fts3SelectDoctotal(p, &pStmt); if( rc ) return rc; a = sqlite3_column_blob(pStmt, 0); if( a ){ const char *pEnd = &a[sqlite3_column_bytes(pStmt, 0)]; a += sqlite3Fts3GetVarint(a, &nDoc); while( a<pEnd ){ a += sqlite3Fts3GetVarint(a, &nByte); } } if( nDoc==0 || nByte==0 ){ sqlite3_reset(pStmt); return SQLITE_CORRUPT; } pCsr->nRowAvg = (int)(((nByte / nDoc) + pgsz) / pgsz); assert( pCsr->nRowAvg>0 ); rc = sqlite3_reset(pStmt); if( rc!=SQLITE_OK ) return rc; } /* Assume that a blob flows over onto overflow pages if it is larger ** than (pgsz-35) bytes in size (the file-format documentation ** confirms this). */ for(iBlock=pReader->iStartBlock; iBlock<=pReader->iLeafEndBlock; iBlock++){ |
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Changes to test/fts3matchinfo.test.
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360 361 362 363 364 365 366 367 368 | } execsql { INSERT INTO t11(t11) VALUES('optimize') } } {} do_execsql_test 8.3 { SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*' } {{204 1 3 3 0} {204 1 3 3 0} {204 1 3 3 0}} finish_test | > > > > > > > > > > > > > > > > | 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 | } execsql { INSERT INTO t11(t11) VALUES('optimize') } } {} do_execsql_test 8.3 { SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*' } {{204 1 3 3 0} {204 1 3 3 0} {204 1 3 3 0}} # Corruption related tests. do_execsql_test 8.4.1.1 { UPDATE t11_stat SET value = X'0000'; } do_catchsql_test 8.5.1.2 { SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*' } {1 {database disk image is malformed}} do_execsql_test 8.4.2.1 { UPDATE t11_stat SET value = X'00'; } do_catchsql_test 8.5.2.2 { SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*' } {1 {database disk image is malformed}} do_execsql_test 8.4.3.1 { UPDATE t11_stat SET value = NULL; } do_catchsql_test 8.5.3.2 { SELECT mit(matchinfo(t11, 'nxa')) FROM t11 WHERE t11 MATCH 'a*' } {1 {database disk image is malformed}} finish_test |