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

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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
comparison
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26814:7c8af1979e78 26815:8eccfae04bb4
1 /* Minimal main program -- everything is loaded from the library */ 1 /* Minimal main program -- everything is loaded from the library */
2 2
3 #include "Python.h" 3 #include "Python.h"
4 4
5 #ifdef __FreeBSD__
6 #include <floatingpoint.h>
7 #endif
8
5 int 9 int
6 main(int argc, char **argv) 10 main(int argc, char **argv)
7 { 11 {
12 /* 754 requires that FP exceptions run in "no stop" mode by default,
13 * and until C vendors implement C99's ways to control FP exceptions,
14 * Python requires non-stop mode. Alas, some platforms enable FP
15 * exceptions by default. Here we disable them.
16 */
17 #ifdef __FreeBSD__
18 fp_except_t m;
19
20 m = fpgetmask();
21 fpsetmask(m & ~FP_X_OFL);
22 #endif
8 return Py_Main(argc, argv); 23 return Py_Main(argc, argv);
9 } 24 }