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Fix a crash that could occur if a sub-select inside an EXISTS expression features an ORDER BY clause containing one or more window functions.

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FossilOrigin-Name: 9768e7db624fbfe688d61ac06bffca14a169d439d8f65f5a14529af5660d3d2e
This commit is contained in:
dan
2021-03-04 14:18:22 +00:00
parent 8718f0b613
commit 50f9f6c649
3 changed files with 12 additions and 8 deletions
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6
src/select.c
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@@ -85,12 +85,16 @@ static void clearSelect(sqlite3 *db, Select *p, int bFree){
sqlite3ExprDelete(db, p->pHaving);
sqlite3ExprListDelete(db, p->pOrderBy);
sqlite3ExprDelete(db, p->pLimit);
if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);
#ifndef SQLITE_OMIT_WINDOWFUNC
if( OK_IF_ALWAYS_TRUE(p->pWinDefn) ){
sqlite3WindowListDelete(db, p->pWinDefn);
}
while( p->pWin ){
assert( p->pWin->ppThis==&p->pWin );
sqlite3WindowUnlinkFromSelect(p->pWin);
}
#endif
if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);
if( bFree ) sqlite3DbFreeNN(db, p);
p = pPrior;
bFree = 1;