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Python/pyfpe.c still contains two variables (PyFPE_jbuf and PyFPE_counter) and one function (PyFPE_dummy) for ABI compatibility:
---
/* These variables used to be used when Python was built with --with-fpectl,
 * but support for that was dropped in 3.7. We continue to define them,
 * though, because they may be referenced by extensions using the stable ABI.
 */
#include "setjmp.h"
jmp_buf PyFPE_jbuf;
int PyFPE_counter;
double
PyFPE_dummy(void *dummy)
{
 return 1.0;
}
---