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Overview
| Comment: | Remove unreachable condition from btree.c. (CVS 6876) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
47b40fefa67f7c563ce2004509aaf8e2 |
| User & Date: | danielk1977 2009-07-11 05:06:52 |
Context
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2009-07-11
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| 06:55 | Modify the integrity-check code so that each b-tree page inspected is reinitialized while doing so, even if an initialized copy exists in the cache. This prevents an assert from failing when running integrity_check on a corrupt database. (CVS 6877) check-in: 709576c6 user: danielk1977 tags: trunk | |
| 05:06 | Remove unreachable condition from btree.c. (CVS 6876) check-in: 47b40fef user: danielk1977 tags: trunk | |
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2009-07-10
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| 16:51 | Fix a pager reference count leak in btree that occurs on an OOM following a database page size change. (CVS 6875) check-in: c6dfc8bd user: drh tags: trunk | |
Changes
Changes to src/btree.c.
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.674 2009/07/10 16:51:30 drh Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ #include "btreeInt.h" ................................................................................ rc = moveToRoot(pCur); if( rc ){ return rc; } assert( pCur->apPage[pCur->iPage] ); assert( pCur->apPage[pCur->iPage]->isInit ); if( pCur->eState==CURSOR_INVALID ){ *pRes = -1; assert( pCur->apPage[pCur->iPage]->nCell==0 ); return SQLITE_OK; } assert( pCur->apPage[0]->intKey || pIdxKey ); for(;;){ int lwr, upr; Pgno chldPg; MemPage *pPage = pCur->apPage[pCur->iPage]; int c = -1; /* pRes return if table is empty must be -1 */ lwr = 0; upr = pPage->nCell-1; if( (!pPage->intKey && pIdxKey==0) || upr<0 ){ rc = SQLITE_CORRUPT_BKPT; goto moveto_finish; } if( biasRight ){ pCur->aiIdx[pCur->iPage] = (u16)upr; }else{ pCur->aiIdx[pCur->iPage] = (u16)((upr+lwr)/2); |
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** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** $Id: btree.c,v 1.675 2009/07/11 05:06:52 danielk1977 Exp $ ** ** This file implements a external (disk-based) database using BTrees. ** See the header comment on "btreeInt.h" for additional information. ** Including a description of file format and an overview of operation. */ #include "btreeInt.h" ................................................................................ rc = moveToRoot(pCur); if( rc ){ return rc; } assert( pCur->apPage[pCur->iPage] ); assert( pCur->apPage[pCur->iPage]->isInit ); assert( pCur->apPage[pCur->iPage]->nCell>0 || pCur->eState==CURSOR_INVALID ); if( pCur->eState==CURSOR_INVALID ){ *pRes = -1; assert( pCur->apPage[pCur->iPage]->nCell==0 ); return SQLITE_OK; } assert( pCur->apPage[0]->intKey || pIdxKey ); for(;;){ int lwr, upr; Pgno chldPg; MemPage *pPage = pCur->apPage[pCur->iPage]; int c; /* pPage->nCell must be greater than zero. If this is the root-page ** the cursor would have been INVALID above and this for(;;) loop ** not run. If this is not the root-page, then the moveToChild() routine ** would have already detected db corruption. */ assert( pPage->nCell>0 ); lwr = 0; upr = pPage->nCell-1; if( (!pPage->intKey && pIdxKey==0) ){ rc = SQLITE_CORRUPT_BKPT; goto moveto_finish; } if( biasRight ){ pCur->aiIdx[pCur->iPage] = (u16)upr; }else{ pCur->aiIdx[pCur->iPage] = (u16)((upr+lwr)/2); |