Do not require mapping palette to have 256 entries

python-pillow · Aug 28, 2022 · c9c190e · c9c190e
1 parent 9fa4219
commit c9c190e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/PIL/Image.py b/src/PIL/Image.py
@@ -1901,7 +1901,7 @@ def remap_palette(self, dest_map, source_palette=None):
                 source_palette = bytearray(i // 3 for i in range(768))
 
         palette_bytes = b""
-        new_positions = [0] * 256
+        new_positions = [0] * min(256, max(dest_map) + 1)
 
         # pick only the used colors from the palette
         for i, oldPosition in enumerate(dest_map):