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Fix an incorrect table ref-count in the new recursive CTE logic that might

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result in a reference to freed memory following a syntax error.

FossilOrigin-Name: 75a0288871ccb2a69a636cbb328fe19045a0d0ef96a193ecd118b9a196784d2d
This commit is contained in:
drh
2020-10-19 20:49:54 +00:00
parent 787f6d418d
commit 94d6f3f836
3 changed files with 8 additions and 8 deletions
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2
src/select.c
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@@ -4861,6 +4861,7 @@ static int withExpand(
&& 0==sqlite3StrICmp(pItem->zName, pCte->zName)
){
pItem->pTab = pTab;
pTab->nTabRef++;
pItem->fg.isRecursive = 1;
if( pRecTerm->selFlags & SF_Recursive ){
sqlite3ErrorMsg(pParse,
@@ -4868,7 +4869,6 @@ static int withExpand(
);
return SQLITE_ERROR;
}
pTab->nTabRef++;
pRecTerm->selFlags |= SF_Recursive;
if( iRecTab<0 ) iRecTab = pParse->nTab++;
pItem->iCursor = iRecTab;