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Continuing work toward detecting and fixing shallow-copy misuse.

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FossilOrigin-Name: d0342f4bb9d25dd1dba3957778faa993fb9cc81c
This commit is contained in:
drh
2010-09-28 00:25:58 +00:00
parent 2b4ded993b
commit ebc16717fa
6 changed files with 30 additions and 27 deletions
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12
src/expr.c
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@@ -2867,10 +2867,14 @@ int sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){
int inReg;
assert( target>0 && target<=pParse->nMem );
inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
assert( pParse->pVdbe || pParse->db->mallocFailed );
if( inReg!=target && pParse->pVdbe ){
sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target);
if( pExpr && pExpr->op==TK_REGISTER ){
sqlite3VdbeAddOp2(pParse->pVdbe, OP_Copy, pExpr->iTable, target);
}else{
inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
assert( pParse->pVdbe || pParse->db->mallocFailed );
if( inReg!=target && pParse->pVdbe ){
sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target);
}
}
return target;
}