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gh-128636: Fix crash in PyREPL when os.environ is overwritten with an invalid value (#128653)

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Tomas R. 2025-01-22 17:15:23 +01:00 • committed by GitHub
parent 2ed5ee9a50
commit ba9a4b6215
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3 changed files with 22 additions and 5 deletions
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12
Lib/_pyrepl/unix_console.py
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@ -449,10 +449,12 @@ class UnixConsole(Console):
"""
try:
return int(os.environ["LINES"]), int(os.environ["COLUMNS"])
except KeyError:
height, width = struct.unpack(
"hhhh", ioctl(self.input_fd, TIOCGWINSZ, b"\000" * 8)
)[0:2]
except (KeyError, TypeError, ValueError):
try:
size = ioctl(self.input_fd, TIOCGWINSZ, b"\000" * 8)
except OSError:
return 25, 80
height, width = struct.unpack("hhhh", size)[0:2]
if not height:
return 25, 80
return height, width
@ -468,7 +470,7 @@ class UnixConsole(Console):
"""
try:
return int(os.environ["LINES"]), int(os.environ["COLUMNS"])
except KeyError:
except (KeyError, TypeError, ValueError):
return 25, 80
def forgetinput(self):