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| author | drh <drh@noemail.net> | 2019-12-24 15:01:17 +0000 |
|---|---|---|
| committer | drh <drh@noemail.net> | 2019-12-24 15:01:17 +0000 |
| commit | 4eac5f04ab996fc5bf262edfcead84bc4e8a3ccb (patch) | |
| tree | 465d52b9c766fde176c5cd5655ab2f0796fc7a42 /src/expr.c | |
| parent | c26e78d275134213fa35956b969efa9d5834a664 (diff) | |
| download | sqlite-4eac5f04ab996fc5bf262edfcead84bc4e8a3ccb.tar.gz sqlite-4eac5f04ab996fc5bf262edfcead84bc4e8a3ccb.zip | |
Extra defense against problems following an OOM. dbsqlfuzz find. Also
import the latest dbsqlfuzz test cases.
FossilOrigin-Name: 0a70f5ddaf3567f335cc0fd0fcd5303e2afb5e38a6388faddf5cab1f2a74e3dd
Diffstat (limited to 'src/expr.c')
| -rw-r--r-- | src/expr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/expr.c b/src/expr.c index 617fcf063..601574e68 100644 --- a/src/expr.c +++ b/src/expr.c @@ -2207,7 +2207,9 @@ int sqlite3ExprCanBeNull(const Expr *p){ case TK_COLUMN: return ExprHasProperty(p, EP_CanBeNull) || p->y.pTab==0 || /* Reference to column of index on expression */ - (p->iColumn>=0 && p->y.pTab->aCol[p->iColumn].notNull==0); + (p->iColumn>=0 + && ALWAYS(p->y.pTab->aCol!=0) /* Defense against OOM problems */ + && p->y.pTab->aCol[p->iColumn].notNull==0); default: return 1; } @@ -3224,6 +3226,7 @@ static void sqlite3ExprCodeIN( }else{ destStep2 = destStep6 = sqlite3VdbeMakeLabel(pParse); } + if( pParse->nErr ) goto sqlite3ExprCodeIN_finished; for(i=0; i<nVector; i++){ Expr *p = sqlite3VectorFieldSubexpr(pExpr->pLeft, i); if( sqlite3ExprCanBeNull(p) ){ |