Crash report

1. remove_unused_consts in Python/flowgraph.c

When PyMem_Malloc(nconsts * sizeof(Py_ssize_t)); fails, we need to set an exception.

1. gethandlelist and getattributelist in _winapi.c

This place misses it:

All other error paths set exceptions, except this if:

1. _channelends_new in Modules/_interpchannelsmodule.c

Later we check for errors in handle_channel_error, it requires either setting err to non -1 or to set Python exception. Both are false, it fails with the assertion failure.

Linked PRs

• gh-151126: Fix missing PyErr_NoMemory() in remove_unused_consts #151127
• [3.15] gh-151126: Fix missing PyErr_NoMemory() in remove_unused_consts (GH-151127) #151134
• [3.14] gh-151126: Fix missing PyErr_NoMemory() in remove_unused_consts (GH-151127) #151135
• [3.13] gh-151126: Fix missing PyErr_NoMemory() in remove_unused_consts (GH-151127) #151136
• gh-151126: Add PyErr_NoMemory() in strong_cache_node_new #151137
• gh-151126: Add missing PyErr_NoMemory in _winapi module #151154
• [3.15] gh-151126: Add missing PyErr_NoMemory in _winapi module (GH-151154) #151180
• [3.14] gh-151126: Add missing PyErr_NoMemory in _winapi module (GH-151154) #151181
• [3.13] gh-151126: Add missing PyErr_NoMemory in _winapi module (GH-151154) #151182
• gh-151126: Fix missing memory errors in _interpchannelsmodule.c #151239
• [3.15] gh-151126: Fix missing memory errors in _interpchannelsmodule.c (GH-151239) #151265
• [3.13] gh-151126: Fix missing memory errors in _interpchannelsmodule.c (GH-151239) #151266
• [3.14] gh-151126: Fix missing memory errors in _interpchannelsmodule.c (GH-151239) #151336
• [3.13] gh-151126: Fix missing memory errors in _interpchannelsmodule.c (GH-151239) #151338
• gh-151126: Fix missing memory error in os._path_splitroot #151339
• [3.15] gh-151126: Fix missing memory error in os._path_splitroot (GH-151339) #151360
• [3.14] gh-151126: Fix missing memory error in os._path_splitroot (GH-151339) #151361
• [3.13] gh-151126: Fix missing memory error in os._path_splitroot (GH-151339) #151362
• gh-151126: Fix crash on unset memory error in ctypes.get_errno #151382
• [3.15] gh-151126: Fix crash on unset memory error in ctypes.get_errno (GH-151382) #151398
• [3.14] gh-151126: Fix crash on unset memory error in ctypes.get_errno (GH-151382) #151399
• [3.13] gh-151126: Fix crash on unset memory error in ctypes.get_errno (GH-151382) #151400