database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-08-07 02:42:48 +03:00
Code Activity

In the typeof() optimization in OP_Column, expand the size of the bogus buffer

Browse Source 
provided for data so that it is big enough to cover the increased number of
bytes displayed during register tracing from check-in [54553bf16fabd72d].
This is the correct fix for ticket [bbd55a97e66ff50d], though the earlier one
does not hurt and is useful to retain.

FossilOrigin-Name: e1154c39ba0f8caec70d330e6d5bec745c93ec9a7eafedb3e3730fadc8b8277c
This commit is contained in:
drh
2020-01-06 20:48:45 +00:00
parent 5ca06329c9
commit cbae3f8c7d
4 changed files with 12 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/vdbe.c
View File

@@ -2831,10 +2831,11 @@ case OP_Column: {
**
** Although sqlite3VdbeSerialGet() may read at most 8 bytes from the
** buffer passed to it, debugging function VdbeMemPrettyPrint() may
** read up to 16. So 16 bytes of bogus content is supplied.
** read more. Use the global constant sqlite3CtypeMap[] as the array,
** as that array is 256 bytes long (plenty for VdbeMemPrettyPrint())
** and it begins with a bunch of zeros.
*/
static u8 aZero[16]; /* This is the bogus content */
sqlite3VdbeSerialGet(aZero, t, pDest);
sqlite3VdbeSerialGet((u8*)sqlite3CtypeMap, t, pDest);
}else{
rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, aOffset[p2], len, pDest);
if( rc!=SQLITE_OK ) goto abort_due_to_error;