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bpo-37474: Don't call fedisableexcept() on FreeBSD (GH-16515) 

On FreeBSD, Python no longer calls fedisableexcept() at startup to
control the floating point control mode. The call became useless
since FreeBSD 6: it became the default mode.
This commit is contained in:
Victor Stinner 2019-10-01 13:12:29 +02:00 committed by GitHub
parent 2f90261280
commit 5e0ea7540f
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2 changed files with 3 additions and 13 deletions
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3
Misc/NEWS.d/next/Core and Builtins/2019-10-01-12-46-30.bpo-37474.cB3se1.rst Normal file
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@ -0,0 +1,3 @@
On FreeBSD, Python no longer calls ``fedisableexcept()`` at startup to
control the floating point control mode. The call became useless since
FreeBSD 6: it became the default mode.

13
Modules/main.c
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@ -6,10 +6,6 @@
#include "pycore_pymem.h" #include "pycore_pymem.h"
#include "pycore_pystate.h" #include "pycore_pystate.h"
#ifdef __FreeBSD__
# include <fenv.h> /* fedisableexcept() */
#endif
/* Includes for exit_sigint() */ /* Includes for exit_sigint() */
#include <stdio.h> /* perror() */ #include <stdio.h> /* perror() */
#ifdef HAVE_SIGNAL_H #ifdef HAVE_SIGNAL_H
@ -43,15 +39,6 @@ pymain_init(const _PyArgv *args)
return status; return status;
} }
/* 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__
fedisableexcept(FE_OVERFLOW);
#endif
PyPreConfig preconfig; PyPreConfig preconfig;
PyPreConfig_InitPythonConfig(&preconfig); PyPreConfig_InitPythonConfig(&preconfig);