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.
diff --git a/Include/pyport.h b/Include/pyport.h
index e9a0155..6a9b7e6 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -255,10 +255,15 @@
* if the returned result is a NaN, or if a C89 box returns HUGE_VAL
* in non-overflow cases.
* X is evaluated more than once.
+ * Some platforms have better way to spell this, so expect some #ifdef'ery.
*/
+#ifdef __FreeBSD__
+#define Py_OVERFLOWED(X) isinf(X)
+#else
#define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE || \
(X) == Py_HUGE_VAL || \
(X) == -Py_HUGE_VAL))
+#endif
/* Py_SET_ERANGE_ON_OVERFLOW(x)
* If a libm function did not set errno, but it looks like the result
@@ -320,7 +325,7 @@
#if defined(__GNUC__) && (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)
#define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))
#else
-#define Py_DEPRECATED(VERSION_UNUSED)
+#define Py_DEPRECATED(VERSION_UNUSED)
#endif
/**************************************************************************
@@ -395,17 +400,17 @@
/* Declarations for symbol visibility.
PyAPI_FUNC(type): Declares a public Python API function and return type
- PyAPI_DATA(type): Declares public Python data and its type
+ PyAPI_DATA(type): Declares public Python data and its type
PyMODINIT_FUNC: A Python module init function. If these functions are
- inside the Python core, they are private to the core.
- If in an extension module, it may be declared with
+ inside the Python core, they are private to the core.
+ If in an extension module, it may be declared with
external linkage depending on the platform.
As a number of platforms support/require "__declspec(dllimport/dllexport)",
we support a HAVE_DECLSPEC_DLL macro to save duplication.
*/
-/*
+/*
All windows ports, except cygwin, are handled in PC/pyconfig.h
BeOS is only other autoconf platform requiring special linkage handling
and both these use __declspec()