python-faulthandler 2.4-1build1 (amd64 binary) in ubuntu focal

 Fault handler for SIGSEGV, SIGFPE, SIGBUS and SIGILL signals: it displays
 the Python backtrace and restores the previous handler. It allocates an
 alternate stack for this handler, if signaltstack() is available, to be
 able to allocate memory on the stack, even on stack overflow.