Added a shallow copy for blocks to prevent memory mutations in SCFG.i…

…nsert_blocks
numba · Sep 14, 2023 · 6a18e03 · 6a18e03
1 parent 688b43b
commit 6a18e03
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/numba_rvsdg/core/datastructures/scfg.py b/numba_rvsdg/core/datastructures/scfg.py
@@ -524,6 +524,11 @@ def insert_block(
         block_type: SyntheticBlock
             The type/class of the newly created block.
         """
+        # To prevent spurious mutations in successsors and predecessors
+        # since they are a part of the graph.
+        successors = successors.copy()
+        predecessors = predecessors.copy()
+
         # TODO: needs a diagram and documentaion
         # initialize new block
         new_block = block_type(