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Title: [3.14] gh-159864: Fix syslog.openlog() crash with concurrent sys.argv changes (GH-159884) by ZeroIntensity · Pull Request #159954 · python/cpython · GitHub

Open Graph Title: [3.14] gh-159864: Fix syslog.openlog() crash with concurrent sys.argv changes (GH-159884) by ZeroIntensity · Pull Request #159954 · python/cpython

X Title: [3.14] gh-159864: Fix syslog.openlog() crash with concurrent sys.argv changes (GH-159884) by ZeroIntensity · Pull Request #159954 · python/cpython

Description: syslog_get_argv() took sys.argv[0] with PyList_GetItem() and increfed it only afterwards, so on the free-threaded build a concurrent replacement of sys.argv[0] could free it in between. Use PyList_GetItemRef() instead. (cherry picked from commit e5e0748) Issue: gh-159864

Open Graph Description: syslog_get_argv() took sys.argv[0] with PyList_GetItem() and increfed it only afterwards, so on the free-threaded build a concurrent replacement of sys.argv[0] could free it in between. Use PyList_...

X Description: syslog_get_argv() took sys.argv[0] with PyList_GetItem() and increfed it only afterwards, so on the free-threaded build a concurrent replacement of sys.argv[0] could free it in between. Use PyList_...

Opengraph URL: https://github.com/python/cpython/pull/159954

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0843b8d [3.14] gh-159864: Fix syslog.openlog() crash with concurrent sys.argv… espressolee Oct 20, 2026 https://github.com/python/cpython/pull/159954/commits/0843b8def15d3860c0ee84d43c80d0e1c0e75daf
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