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Overview
| Comment: | Fix a couple of harmless compiler warnings. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | experimental |
| Files: | files | file ages | folders |
| SHA1: |
fcf480cc630976b619aabd5f7fb7b096 |
| User & Date: | drh 2014-03-03 21:46:55.799 |
Context
|
2014-03-03
| ||
| 21:59 | Refactor the sqlite3VdbeRecordCompare() routine used to compare btree records. Create a couple of fast-track routines to handle the common cases of a string with BINARY collation or integer values as the left-most column. This gives a significant performance boost in common use. Oops: This build does not work on the Beaglebone where "char" defaults to unsigned. (check-in: aec5473a75 user: drh tags: broken-on-arm) | |
| 21:46 | Fix a couple of harmless compiler warnings. (Closed-Leaf check-in: fcf480cc63 user: drh tags: experimental) | |
| 20:48 | Avoid a buffer overread in vdbeCompareRecordInt() that might occur if the database is corrupt. (check-in: 7c0b4381f0 user: dan tags: experimental) | |
Changes
Changes to src/btree.c.
| ︙ | ︙ | |||
4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 |
if( pIdxKey ){
xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
assert( pIdxKey->default_rc==1
|| pIdxKey->default_rc==0
|| pIdxKey->default_rc==-1
);
}
rc = moveToRoot(pCur);
if( rc ){
return rc;
}
assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage] );
| > > | 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 |
if( pIdxKey ){
xRecordCompare = sqlite3VdbeFindCompare(pIdxKey);
assert( pIdxKey->default_rc==1
|| pIdxKey->default_rc==0
|| pIdxKey->default_rc==-1
);
}else{
xRecordCompare = 0; /* Not actually used. Avoids a compiler warning. */
}
rc = moveToRoot(pCur);
if( rc ){
return rc;
}
assert( pCur->pgnoRoot==0 || pCur->apPage[pCur->iPage] );
|
| ︙ | ︙ |
Changes to src/vdbeaux.c.
| ︙ | ︙ | |||
3571 3572 3573 3574 3575 3576 3577 |
** byte (i.e. is less than 128).
*/
static int vdbeRecordCompareInt(
int nKey1, const void *pKey1, /* Left key */
const UnpackedRecord *pPKey2, /* Right key */
int bSkip /* Ignored */
){
| < | 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 |
** byte (i.e. is less than 128).
*/
static int vdbeRecordCompareInt(
int nKey1, const void *pKey1, /* Left key */
const UnpackedRecord *pPKey2, /* Right key */
int bSkip /* Ignored */
){
const u8 *aKey = &((const u8*)pKey1)[*(const u8*)pKey1 & 0x3F];
int serial_type = ((const u8*)pKey1)[1];
int res;
i64 v = pPKey2->aMem[0].u.i;
i64 lhs;
UNUSED_PARAMETER(bSkip);
|
| ︙ | ︙ |