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Protect all accesses to the Expr.x union using nearby assert()s and branches.

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FossilOrigin-Name: 8eaa1d4a98b24adf245bbd2fe9212aa6a924a0f09c445906d7f87574f36a7423
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drh
2021-10-07 17:43:30 +00:00
parent 9d43db5b5c
commit a4eeccdfdf
14 changed files with 197 additions and 107 deletions
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src/walker.c
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@@ -75,7 +75,7 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){
assert( !ExprHasProperty(pExpr, EP_WinFunc) );
pExpr = pExpr->pRight;
continue;
}else if( ExprHasProperty(pExpr, EP_xIsSelect) ){
}else if( ExprUseXSelect(pExpr) ){
assert( !ExprHasProperty(pExpr, EP_WinFunc) );
if( sqlite3WalkSelect(pWalker, pExpr->x.pSelect) ) return WRC_Abort;
}else{