Mercurial > cpython-lru_cache-weakref
diff 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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--- a/Modules/python.c Sat Dec 28 09:23:09 2002 +0000 +++ b/Modules/python.c Sat Dec 28 21:56:08 2002 +0000 @@ -2,8 +2,23 @@ #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); }