From 4643bd9a9cf43332992d10982c52debf3f0d980c Mon Sep 17 00:00:00 2001 From: Tim Peters Date: Sat, 28 Dec 2002 21:56:08 +0000 Subject: 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. --- Modules/python.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'Modules/python.c') diff --git a/Modules/python.c b/Modules/python.c index f9262e8a20..2739b8b110 100644 --- a/Modules/python.c +++ b/Modules/python.c @@ -2,8 +2,23 @@ #include "Python.h" +#ifdef __FreeBSD__ +#include +#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); } -- cgit v1.2.1