Author xxm
Recipients xxm
Date 2020-12-22.10:19:47
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Message-id <1608632387.72.0.614247098104.issue42714@roundup.psfhosted.org>
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Calling function compile() with large size can cause a segmentation fault in Python 3.7 -3.10. Please check the following two examples. The example 1 works as expected, while the second one triggers segmentation fault on Python 3.7,3.8,3.9,3.10. The primary difference between these two examples lay on the value of "n".   


Example 1:
=========================================
mylist = []
n = 100000
print(compile("mylist"+"+mylist"*n,'','single'))
==========================================

The actual output: Recursion Error on Python 3.5-3.10 (as expected)




Example 2:
=========================================
mylist = []
n = 1000000
print(compile("mylist"+"+mylist"*n,'','single'))
===================================

The actual output: Recursive Error on Python 3.5, 3.6 (as expected),  segmentation fault on Python 3.7, 3.8, 3.9, 3.10 (not as expected)




My system information:

>> python3.10 -V
Python 3.10.0a2

>> python3.9 -V
Python 3.9.0rc1

>> python3.8 -V
Python 3.8.0

>> python3.7 -V
Python 3.7.3

>> python3.6 -V
Python 3.6.12

>> uname -v
#73~16.04.1-Ubuntu
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Date User Action Args
2020-12-22 10:19:47xxmsetrecipients: + xxm
2020-12-22 10:19:47xxmsetmessageid: <1608632387.72.0.614247098104.issue42714@roundup.psfhosted.org>
2020-12-22 10:19:47xxmlinkissue42714 messages
2020-12-22 10:19:47xxmcreate