diff options
Diffstat (limited to 'src/wherecode.c')
| -rw-r--r-- | src/wherecode.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/wherecode.c b/src/wherecode.c index 507148d31..4d0ba880d 100644 --- a/src/wherecode.c +++ b/src/wherecode.c @@ -2170,7 +2170,7 @@ Bitmask sqlite3WhereCodeOneLoopStart( /* The extra 0x10000 bit on the opcode is masked off and does not ** become part of the new Expr.op. However, it does make the ** op==TK_AND comparison inside of sqlite3PExpr() false, and this - ** prevents sqlite3PExpr() from implementing AND short-circuit + ** prevents sqlite3PExpr() from applying the AND short-circuit ** optimization, which we do not want here. */ pAndExpr = sqlite3PExpr(pParse, TK_AND|0x10000, 0, pAndExpr); } @@ -2186,10 +2186,16 @@ Bitmask sqlite3WhereCodeOneLoopStart( if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){ WhereInfo *pSubWInfo; /* Info for single OR-term scan */ Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */ + Expr *pDelete; /* Local copy of OR clause term */ int jmp1 = 0; /* Address of jump operation */ testcase( (pTabItem[0].fg.jointype & JT_LEFT)!=0 && !ExprHasProperty(pOrExpr, EP_FromJoin) ); /* See TH3 vtab25.400 and ticket 614b25314c766238 */ + pDelete = pOrExpr = sqlite3ExprDup(db, pOrExpr, 0); + if( db->mallocFailed ){ + sqlite3ExprDelete(db, pDelete); + continue; + } if( pAndExpr ){ pAndExpr->pLeft = pOrExpr; pOrExpr = pAndExpr; @@ -2304,6 +2310,7 @@ Bitmask sqlite3WhereCodeOneLoopStart( sqlite3WhereEnd(pSubWInfo); ExplainQueryPlanPop(pParse); } + sqlite3ExprDelete(db, pDelete); } } ExplainQueryPlanPop(pParse); |