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Overview
| Comment: | Fix an assert() in btree.c that might have fired on a corrupt database file. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 5ab2b3e300b70bc04cdead69275f8f73 |
| User & Date: | drh 2009-12-03 21:26:53 |
Context
|
2009-12-04
| ||
| 01:44 | Clear a conflicting TCL variable in the fts3rnd.test test script. check-in: f9047b2e user: drh tags: trunk | |
|
2009-12-03
| ||
| 21:26 | Fix an assert() in btree.c that might have fired on a corrupt database file. check-in: 5ab2b3e3 user: drh tags: trunk | |
| 19:40 | Remove a NEVER() from btree.c that could occur in a very obscure tested evaluation with an I/O error on fstat(). check-in: d5861d9f user: drh tags: trunk | |
Changes
Changes to src/btree.c.
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int nSkip = (iChild ? 4 : 0);
if( *pRC ) return;
assert( i>=0 && i<=pPage->nCell+pPage->nOverflow );
assert( pPage->nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=5460 );
assert( pPage->nOverflow<=ArraySize(pPage->aOvfl) );
assert( sz==cellSizePtr(pPage, pCell) );
assert( sqlite3_mutex_held(pPage->pBt->mutex) );
if( pPage->nOverflow || sz+2>pPage->nFree ){
if( pTemp ){
memcpy(pTemp+nSkip, pCell+nSkip, sz-nSkip);
pCell = pTemp;
}
if( iChild ){
put4byte(pCell, iChild);
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5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 5307 5308 5309 5310 5311 |
int nSkip = (iChild ? 4 : 0); if( *pRC ) return; assert( i>=0 && i<=pPage->nCell+pPage->nOverflow ); assert( pPage->nCell<=MX_CELL(pPage->pBt) && MX_CELL(pPage->pBt)<=5460 ); assert( pPage->nOverflow<=ArraySize(pPage->aOvfl) ); assert( sqlite3_mutex_held(pPage->pBt->mutex) ); /* The cell should normally be sized correctly. However, when moving a ** malformed cell from a leaf page to an interior page, if the cell size ** wanted to be less than 4 but got rounded up to 4 on the leaf, then size ** might be less than 8 (leaf-size + pointer) on the interior node. Hence ** the term after the || in the following assert(). */ assert( sz==cellSizePtr(pPage, pCell) || (sz==8 && iChild>0) ); if( pPage->nOverflow || sz+2>pPage->nFree ){ if( pTemp ){ memcpy(pTemp+nSkip, pCell+nSkip, sz-nSkip); pCell = pTemp; } if( iChild ){ put4byte(pCell, iChild); |