Bug report

According to the documentation they save the original result oftermios.tcgetattr() and return it. But while making a copy of the attribute list before modifying it they do not take in account that it contains a reference to originalcc list and modify it. So these functions return a list which contains original values and modifiedcc list.

These functions started returning the attribute list in#85984 (486bc8e).

The question: who should make a copy of the internal list:setraw() before passing it tocfmakeraw(), orcfmakeraw() itself?

cc@gpshead

Linked PRs

• gh-110392: Fix tty functions #110642
• [3.12] gh-110392: Fix tty functions (GH-110642) #110853