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Overview
Comment: | Make sure the result of sqlite3VdbeGetOp() is not used as an array following an OOM error, since after (6691) it might be a single-entry dummy opcode. (CVS 6724) |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
127b13981960a9690de09e8f9d0b38a4 |
User & Date: | drh 2009-06-06 15:17:28.000 |
Context
2009-06-06
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16:08 | Fix an error in the malloc.test test script causing a small buffer overread. (CVS 6725) (check-in: 4d129bee69 user: danielk1977 tags: trunk) | |
15:17 | Make sure the result of sqlite3VdbeGetOp() is not used as an array following an OOM error, since after (6691) it might be a single-entry dummy opcode. (CVS 6724) (check-in: 127b139819 user: drh tags: trunk) | |
14:13 | When building in debug mode with gcc, force the nullMem variable in function columnMem() to be aligned to an 8-byte boundary. Otherwise an assert() statement may fail. (CVS 6723) (check-in: 3fd6c72da5 user: danielk1977 tags: trunk) | |
Changes
Changes to src/where.c.
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12 13 14 15 16 17 18 | ** This module contains C code that generates VDBE code used to process ** the WHERE clause of SQL statements. This module is responsible for ** generating the code that loops through a table looking for applicable ** rows. Indices are selected and used to speed the search when doing ** so is applicable. Because this module is responsible for selecting ** indices, you might also think of this module as the "query optimizer". ** | | | 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | ** This module contains C code that generates VDBE code used to process ** the WHERE clause of SQL statements. This module is responsible for ** generating the code that loops through a table looking for applicable ** rows. Indices are selected and used to speed the search when doing ** so is applicable. Because this module is responsible for selecting ** indices, you might also think of this module as the "query optimizer". ** ** $Id: where.c,v 1.401 2009/06/06 15:17:28 drh Exp $ */ #include "sqliteInt.h" /* ** Trace output macros */ #if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) |
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3547 3548 3549 3550 3551 3552 3553 | ** ** Calls to the code generator in between sqlite3WhereBegin and ** sqlite3WhereEnd will have created code that references the table ** directly. This loop scans all that code looking for opcodes ** that reference the table and converts them into opcodes that ** reference the index. */ | | | 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 | ** ** Calls to the code generator in between sqlite3WhereBegin and ** sqlite3WhereEnd will have created code that references the table ** directly. This loop scans all that code looking for opcodes ** that reference the table and converts them into opcodes that ** reference the index. */ if( (pLevel->plan.wsFlags & WHERE_INDEXED)!=0 && !db->mallocFailed){ int k, j, last; VdbeOp *pOp; Index *pIdx = pLevel->plan.u.pIdx; int useIndexOnly = pLevel->plan.wsFlags & WHERE_IDX_ONLY; assert( pIdx!=0 ); pOp = sqlite3VdbeGetOp(v, pWInfo->iTop); |
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