database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-12 13:01:09 +03:00
Code Activity

Change the OP_IfNotZero opcode so that it decrements register P1 by 1 rather

Browse Source 
than the value in P3, and so that it only decrements if originally positive.
This avoids decrementing the smallest 64-bit signed integer.

FossilOrigin-Name: 165c044686212fbf7182dd560ad1e57eb4cc9838
This commit is contained in:
drh
2016-12-18 17:42:00 +00:00
parent 22d709dd91
commit f99dd359d0
4 changed files with 15 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/select.c
View File

@@ -596,7 +596,7 @@ static void pushOntoSorter(
** register is initialized with value of LIMIT+OFFSET.) After the sorter
** fills up, delete the least entry in the sorter after each insert.
** Thus we never hold more than the LIMIT+OFFSET rows in memory at once */
addr = sqlite3VdbeAddOp3(v, OP_IfNotZero, iLimit, 0, 1); VdbeCoverage(v);
addr = sqlite3VdbeAddOp1(v, OP_IfNotZero, iLimit); VdbeCoverage(v);
sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor);
if( pSort->bOrderedInnerLoop ){
r1 = ++pParse->nMem;