[3.7] bpo-25872: Fix KeyError in linecache when multithreaded (GH-18007) (GH-20092) #20511
+5
−3
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Backporting to 3.8 and adding a NEWS item (I should have added one to the master branch -- oh well).
(cherry picked from commit b86636b)
Co-authored-by: Andrew Kuchling amk@amk.ca
https://bugs.python.org/issue25872