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Initialize the key registers in the skip-scan optimization to NULL, in case

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the query is run on a corrupt database that causes the initialization of the
key to be bypassed.
dbsqlfuzz 62fdf2bece00d24cac8a4edf2cf562e6eeac779d

FossilOrigin-Name: 8b54102a00852b72783b5b2f336c7a093adbdc8e1b94d46b7d315ae6e5d9476b
This commit is contained in:
drh
2021-04-21 11:58:45 +00:00
parent fe599b05f2
commit f02b5ad69d
3 changed files with 9 additions and 8 deletions
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src/wherecode.c
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@@ -700,6 +700,7 @@ static int codeAllEqualityTerms(
if( nSkip ){
int iIdxCur = pLevel->iIdxCur;
sqlite3VdbeAddOp3(v, OP_Null, 0, regBase, nSkip);
sqlite3VdbeAddOp1(v, (bRev?OP_Last:OP_Rewind), iIdxCur);
VdbeCoverageIf(v, bRev==0);
VdbeCoverageIf(v, bRev!=0);