view Modules/python.c @ 26815:8eccfae04bb4 legacy-trunk

Apparently FreeBSD enables some HW floating-point exceptions by default. This can cause core dumps when Python runs. Python relies on the 754- (and C99-) mandated default "non-stop" mode for FP exceptions. This patch from Ben Laurie disables at least one FP exception on FreeBSD at Python startup time.
author Tim Peters <tim.peters@gmail.com>
date Sat, 28 Dec 2002 21:56:08 +0000
parents f66b3a3509c7
children 22a74eaf6b22
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/* Minimal main program -- everything is loaded from the library */

#include "Python.h"

#ifdef __FreeBSD__
#include <floatingpoint.h>
#endif

int
main(int argc, char **argv)
{
	/* 754 requires that FP exceptions run in "no stop" mode by default,
	 * and until C vendors implement C99's ways to control FP exceptions,
	 * Python requires non-stop mode.  Alas, some platforms enable FP
	 * exceptions by default.  Here we disable them.
	 */
#ifdef __FreeBSD__
	fp_except_t m;

	m = fpgetmask();
	fpsetmask(m & ~FP_X_OFL);
#endif
	return Py_Main(argc, argv);
}