STINNER Victor <vstin...@redhat.com> added the comment:
Attached altstack.c mimicks faulthandler unit test test_register_chain(), except that faulthandler_user() uses almost no stack memory. This test should check if SIGSTKSZ is big enough to call a second signal handler from a first signal handler. Example of my Fedora 30 with "Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz" model name in /proc/cpuinfo and Linux kernel 5.1.18-300.fc30.x86_64: $ gcc altstack.c -o altstack && ./altstack SIGSTKSZ = 8192 our signal handler User defined signal 1 Note: the follow gdb command didn't work for me: > (gdb) p _rtld_local_ro._dl_x86_cpu_features.xsave_state_size > $1 = 896 How can I get xsave_state_size for my glibc/kernel/CPU? ---------- Added file: https://bugs.python.org/file48542/altstack.c _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue21131> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
