Feature [feature-requests:#1442] Tighter checking of indices avoids handling

out-of-bounds in lower layer. Make expressions agree in ApplyStep for clarity.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/Partitioning.h b/src/Partitioning.h
index efa6bf95e..0fffd119a 100644
--- a/src/Partitioning.h
+++ b/src/Partitioning.h
@@ -70,7 +70,7 @@ private:
 			body->RangeAddDelta(stepPartition+1, partitionUpTo + 1, stepLength);
 		}
 		stepPartition = partitionUpTo;
-		if (stepPartition >= body->Length()-1) {
+		if (stepPartition >= Partitions()) {
 			stepPartition = Partitions();
 			stepLength = 0;
 		}
@@ -149,7 +149,7 @@ public:
 
 	void SetPartitionStartPosition(T partition, T pos) noexcept {
 		ApplyStep(partition+1);
-		if ((partition < 0) || (partition > body->Length())) {
+		if ((partition < 0) || (partition >= body->Length())) {
 			return;
 		}
 		body->SetValueAt(partition, pos);