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Overview
| Comment: | Fix an fts5 problem causing a crash in phrase queries where the first token of the phrase matches one or more rows but some other token within the phrase matches zero. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
e78f6f3bbf4781850960fe6741f7cba4 |
| User & Date: | dan 2016-11-14 08:19:37 |
Context
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2016-11-23
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| 20:37 | Fix an fts5 problem causing a crash in phrase queries where the first token of the phrase matches one or more rows but some other token within the phrase matches zero. check-in: 4efd331e user: drh tags: branch-3.15 | |
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2016-11-14
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| 15:28 | Avoid unnecessary calls to sqlite3ExprCacheAffinityChange() when generating OP_MakeRecord opcodes that do not change any register affinities. check-in: e211c579 user: drh tags: trunk | |
| 08:19 | Fix an fts5 problem causing a crash in phrase queries where the first token of the phrase matches one or more rows but some other token within the phrase matches zero. check-in: e78f6f3b user: dan tags: trunk | |
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2016-11-11
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| 20:37 | Fix harmless compiler warnings in test code for MSVC. check-in: 7b76be41 user: drh tags: trunk | |
Changes
Changes to ext/fts5/fts5_expr.c.
916 916 if( fts5ExprSynonymAdvanceto(pTerm, bDesc, &iLast, &rc) ){ 917 917 pNode->bNomatch = 0; 918 918 pNode->bEof = 1; 919 919 return rc; 920 920 } 921 921 }else{ 922 922 Fts5IndexIter *pIter = pPhrase->aTerm[j].pIter; 923 - if( pIter->iRowid==iLast ) continue; 923 + if( pIter->iRowid==iLast || pIter->bEof ) continue; 924 924 bMatch = 0; 925 925 if( fts5ExprAdvanceto(pIter, bDesc, &iLast, &rc, &pNode->bEof) ){ 926 926 return rc; 927 927 } 928 928 } 929 929 } 930 930 }
Changes to ext/fts5/fts5_index.c.
2836 2836 static void fts5MultiIterNext( 2837 2837 Fts5Index *p, 2838 2838 Fts5Iter *pIter, 2839 2839 int bFrom, /* True if argument iFrom is valid */ 2840 2840 i64 iFrom /* Advance at least as far as this */ 2841 2841 ){ 2842 2842 int bUseFrom = bFrom; 2843 + assert( pIter->base.bEof==0 ); 2843 2844 while( p->rc==SQLITE_OK ){ 2844 2845 int iFirst = pIter->aFirst[1].iFirst; 2845 2846 int bNewTerm = 0; 2846 2847 Fts5SegIter *pSeg = &pIter->aSeg[iFirst]; 2847 2848 assert( p->rc==SQLITE_OK ); 2848 2849 if( bUseFrom && pSeg->pDlidx ){ 2849 2850 fts5SegIterNextFrom(p, pSeg, iFrom);
Changes to ext/fts5/test/fts5simple3.test.
75 75 do_execsql_test 3.0 { 76 76 CREATE VIRTUAL TABLE x3 USING fts5(one); 77 77 INSERT INTO x3 VALUES('a b c'); 78 78 INSERT INTO x3 VALUES('c b a'); 79 79 INSERT INTO x3 VALUES('o t t'); 80 80 SELECT * FROM x3('x OR y OR z'); 81 81 } 82 + 83 +#------------------------------------------------------------------------- 84 +# Test that a crash occuring when the second or subsequent tokens in a 85 +# phrase matched zero rows has been fixed. 86 +# 87 +do_execsql_test 4.0 { 88 + CREATE VIRTUAL TABLE t1 USING fts5(x); 89 + INSERT INTO t1 VALUES('ab'); 90 + INSERT INTO t1 VALUES('cd'); 91 + INSERT INTO t1 VALUES('ab cd'); 92 + INSERT INTO t1 VALUES('ab cdXXX'); 93 + INSERT INTO t1 VALUES('abXXX cd'); 94 +} 95 +do_execsql_test 4.1 { 96 + SELECT * FROM t1('"ab cd" OR "ab cd" *'); 97 +} {{ab cd} {ab cdXXX}} 98 +do_execsql_test 4.2 { 99 + SELECT * FROM t1('"xy zz" OR "ab cd" *'); 100 +} {{ab cd} {ab cdXXX}} 101 +do_execsql_test 4.3 { 102 + SELECT * FROM t1('"xy zz" OR "xy zz" *'); 103 +} 104 +do_execsql_test 4.4 { 105 + SELECT * FROM t1('"ab cd" OR "xy zz" *'); 106 +} {{ab cd}} 107 +do_execsql_test 4.5 { 108 + CREATE VIRTUAL TABLE t2 USING fts5(x); 109 + INSERT INTO t2 VALUES('ab'); 110 + INSERT INTO t2 VALUES('cd'); 111 + INSERT INTO t2 VALUES('ef'); 112 +} 113 +do_execsql_test 4.6 { 114 + SELECT * FROM t2('ab + xyz'); 115 +} 82 116 83 117 84 118 finish_test 85 119