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gh-135329: prevent infinite traceback loop on Ctrl-C for strace (GH-138133)

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Signed-off-by: yihong0618 <zouzou0208@gmail.com>
Co-authored-by: dura0ok <slpmcf@gmail.com>
Co-authored-by: graymon <greyschwinger@gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
This commit is contained in:
yihong 2025-09-16 18:39:03 +08:00 • committed by GitHub
parent 55e29a6100
commit b9dbf6acb3
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4 changed files with 171 additions and 3 deletions
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17
Lib/_pyrepl/unix_console.py
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@ -340,7 +340,14 @@ def prepare(self):
raw.lflag |= termios.ISIG
raw.cc[termios.VMIN] = 1
raw.cc[termios.VTIME] = 0
tcsetattr(self.input_fd, termios.TCSADRAIN, raw)
try:
tcsetattr(self.input_fd, termios.TCSADRAIN, raw)
except termios.error as e:
if e.args[0] != errno.EIO:
# gh-135329: when running under external programs (like strace),
# tcsetattr may fail with EIO. We can safely ignore this
# and continue with default terminal settings.
raise
# In macOS terminal we need to deactivate line wrap via ANSI escape code
if self.is_apple_terminal:
@ -372,7 +379,11 @@ def restore(self):
self.__disable_bracketed_paste()
self.__maybe_write_code(self._rmkx)
self.flushoutput()
tcsetattr(self.input_fd, termios.TCSADRAIN, self.__svtermstate)
try:
tcsetattr(self.input_fd, termios.TCSADRAIN, self.__svtermstate)
except termios.error as e:
if e.args[0] != errno.EIO:
raise
if self.is_apple_terminal:
os.write(self.output_fd, b"\033[?7h")
@ -411,6 +422,8 @@ def get_event(self, block: bool = True) -> Event | None:
return self.event_queue.get()
else:
continue
elif err.errno == errno.EIO:
raise SystemExit(errno.EIO)
else:
raise
else: