Backport 43470:

Get gcc to do strict IEEE math.  This flag was already used for cc, just not
gcc.  Without this flag, doing pretty much anything with NaNs causes
a Floating Point Exception signal.  This causes the interpreter to quit.
The failing tests this fixes are:  test_long.
This is somewhat equivalent to doing signal(SIGFPE, SIG_IGN).

3 files changed, 21 insertions, 1 deletions

diff --git a/Misc/NEWS b/Misc/NEWS
index 9de19d9834..add8f7ba5c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -9,6 +9,12 @@ What's New in Python 2.4.4c1?
 
 *Release date: DD-MMM-2006*
 
+Core and builtins
+-----------------
+
+Extension Modules
+-----------------
+
 Library
 -------
 
@@ -17,6 +23,14 @@ Library
   raise an exception some day.  But dicts have been allowed, and "mostly
   worked", so support for them won't go away without warning.
 
+Tools/Demos
+-----------
+
+Build
+-----
+
+- Fix test_long failure on Tru64 with gcc by using -mieee gcc option.
+
 
 What's New in Python 2.4.3?
 ===========================
diff --git a/configure b/configure
index a00c15424c..53c6feda61 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 41985 .
+# From configure.in Revision: 43158 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.59 for python 2.4.
 #
@@ -3839,6 +3839,9 @@ echo "${ECHO_T}$ac_cv_no_strict_aliasing_ok" >&6
 	Darwin*)
 	    BASECFLAGS="$BASECFLAGS -Wno-long-double -no-cpp-precomp -mno-fused-madd"
 	    ;;
+	OSF*)
+	    BASECFLAGS="$BASECFLAGS -mieee"
+	    ;;
     esac
     ;;
 
diff --git a/configure.in b/configure.in
index bcb07e6fcf..459e1061b2 100644
--- a/configure.in
+++ b/configure.in
@@ -737,6 +737,9 @@ yes)
 	Darwin*)
 	    BASECFLAGS="$BASECFLAGS -Wno-long-double -no-cpp-precomp -mno-fused-madd"
 	    ;;
+	OSF*)
+	    BASECFLAGS="$BASECFLAGS -mieee"
+	    ;;
     esac
     ;;