Avoid setting the brick of the next region during sweep in plan (#53446)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/coreclr/gc/gc.cpp b/src/coreclr/gc/gc.cpp
index 67c9be65336..56e9998adad 100644
--- a/src/coreclr/gc/gc.cpp
+++ b/src/coreclr/gc/gc.cpp
@@ -28536,7 +28536,7 @@ void gc_heap::sweep_region_in_plan (heap_segment* region,
         // We only need to make sure we fix the brick the last marked object's end is in.
         // Note this brick could have been fixed already.
         size_t last_marked_obj_start_b = brick_of (last_marked_obj_start);
-        size_t last_marked_obj_end_b = brick_of (last_marked_obj_end);
+        size_t last_marked_obj_end_b = brick_of (last_marked_obj_end - 1);
         dprintf (REGIONS_LOG, ("last live obj %Ix(%Ix)-%Ix, fixing its brick(s) %Ix-%Ix",
             last_marked_obj_start, method_table (last_marked_obj_start), last_marked_obj_end,
             last_marked_obj_start_b, last_marked_obj_end_b));