[issue27529] Tkinter memory leak on OS X

[Mirano Tuk]

New submission from Mirano Tuk:

There seems to be a memory leak in tkinter on OSX (Windows and Linux don't seem to be affected). Explicitly calling Tk.update() sometimes permanently allocates a multiple of 4096 bytes. Allocation happens more frequently if update calls are in close succession.

import time
from tkinter import Tk
root = Tk()

while True:
    root.update()  # Huge memory leak

while True:
    root.update()  # No memory leaks
    time.sleep(1)

Issue occurs on python3.3 and above, did not test on older versions.

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components: Macintosh, Tkinter
messages: 270550
nosy: Mirano Tuk, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: Tkinter memory leak on OS X
type: resource usage
versions: Python 3.3, Python 3.4, Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27529>
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