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-rw-r--r--src/delete.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/delete.c b/src/delete.c
index 3f9f398c4..a18026712 100644
--- a/src/delete.c
+++ b/src/delete.c
@@ -918,6 +918,8 @@ int sqlite3GenerateIndexKey(
sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel,
SQLITE_JUMPIFNULL);
pParse->iSelfTab = 0;
+ pPrior = 0; /* Ticket a9efb42811fa41ee 2019-11-02;
+ ** pPartIdxWhere may have corrupted regPrior registers */
}else{
*piPartIdxLabel = 0;
}