Bug report

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Include a minimal, reproducible example (https://stackoverflow.com/help/minimal-reproducible-example), if possible.

Your environment

from enum import Flag, verify, NAMED_FLAGS

@verify(NAMED_FLAGS)
class Color(Flag):
    RED = -1 # 0
    GREEN = 2
    BLUE = 4
    WHITE = 9 
    NEON = 6

In this example, it is working good, if RED has value of 0, but is resulting in Memory Error, if its value is changed to -1

• CPython versions tested on: 3.11.0
• Operating system and architecture: Windows 10, 64 bit

• PR: gh-99248: [Enum] fix negative number infinite loop #99256

• PR: [3.11] gh-99248: [Enum] fix negative number infinite loop (GH-99256) #99259