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Fix an instance of signed arithmetic overflow and an one bit-shift overflow.

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Mark six other signed arithmetic overflow locations that need fixing.

FossilOrigin-Name: 04abab71ecd52f6070b9f84781a3df3d6dba7722
This commit is contained in:
drh
2011-03-05 13:54:15 +00:00
parent 92e4feb74c
commit cfd654bf2a
12 changed files with 33 additions and 27 deletions
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2
src/update.c
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@@ -396,7 +396,7 @@ void sqlite3Update(
pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
);
for(i=0; i<pTab->nCol; i++){
if( aXRef[i]<0 || oldmask==0xffffffff || (oldmask & (1<<i)) ){
if( aXRef[i]<0 || oldmask==0xffffffff || (i<32 && (oldmask & (1<<i))) ){
sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, i, regOld+i);
}else{
sqlite3VdbeAddOp2(v, OP_Null, 0, regOld+i);