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Overview
| Comment: | Fix a segfault that can occur when the LHS of a LIKE operator has an undefined collating sequence. Ticket [1258875e07553]. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
a82e6b4585b9ddba581204976cd5ea87 |
| User & Date: | drh 2010-01-21 23:11:25 |
References
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2010-01-21
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| 23:13 | • Fixed ticket [1258875e]: Undefined collating sequence on LIKE causes segfault plus 3 other changes artifact: 69302bfe user: drh | |
Context
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2010-01-22
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| 15:48 | Fix two similar problems in fts3 that meant that an OOM error could cause a memory leak. check-in: 701ef64b user: dan tags: trunk | |
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2010-01-21
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| 23:11 | Fix a segfault that can occur when the LHS of a LIKE operator has an undefined collating sequence. Ticket [1258875e07553]. check-in: a82e6b45 user: drh tags: trunk | |
| 01:53 | Redesign the string to numeric value caster so that it is more likely to work on unusual floating point hardware. check-in: 8bb1104c user: drh tags: trunk | |
Changes
Changes to src/where.c.
649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 |
if( pLeft->op!=TK_COLUMN || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT ){
/* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
** be the name of an indexed column with TEXT affinity. */
return 0;
}
assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */
pColl = sqlite3ExprCollSeq(pParse, pLeft);
assert( pColl!=0 ); /* Every non-IPK column has a collating sequence */
if( (pColl->type!=SQLITE_COLL_BINARY || *pnoCase) &&
(pColl->type!=SQLITE_COLL_NOCASE || !*pnoCase) ){
/* IMP: R-09003-32046 For the GLOB operator, the column must use the
** default BINARY collating sequence.
** IMP: R-41408-28306 For the LIKE operator, if case_sensitive_like mode
** is enabled then the column must use the default BINARY collating
** sequence, or if case_sensitive_like mode is disabled then the column
|
| |
649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 |
if( pLeft->op!=TK_COLUMN || sqlite3ExprAffinity(pLeft)!=SQLITE_AFF_TEXT ){
/* IMP: R-02065-49465 The left-hand side of the LIKE or GLOB operator must
** be the name of an indexed column with TEXT affinity. */
return 0;
}
assert( pLeft->iColumn!=(-1) ); /* Because IPK never has AFF_TEXT */
pColl = sqlite3ExprCollSeq(pParse, pLeft);
if( pColl==0 ) return 0; /* Happens when LHS has an undefined collation */
if( (pColl->type!=SQLITE_COLL_BINARY || *pnoCase) &&
(pColl->type!=SQLITE_COLL_NOCASE || !*pnoCase) ){
/* IMP: R-09003-32046 For the GLOB operator, the column must use the
** default BINARY collating sequence.
** IMP: R-41408-28306 For the LIKE operator, if case_sensitive_like mode
** is enabled then the column must use the default BINARY collating
** sequence, or if case_sensitive_like mode is disabled then the column
|