TST: Mark medfilt bug as knownfail on 64-bit Linux.

scipy/signal/tests/test_signaltools.py

@@ -1,4 +1,5 @@
-
+import sys
+import platform
 from decimal import Decimal
 
 from numpy.testing import TestCase, run_module_suite, assert_equal, \
@@ -13,6 +14,13 @@
 import numpy as np
 
 
+# check if we're on 64-bit Linux, there a medfilt test fails.
+if sys.platform == 'linux2' and platform.architecture()[0] == '64bit':
+    _linux64bit = True
+else:
+    _linux64bit = False
+
+
 class _TestConvolve(TestCase):
     def test_basic(self):
         a = [3,4,5,6,5,4]
@@ -183,6 +191,8 @@ def test_random_data(self):
         assert_(np.allclose(c, d, rtol=1e-10))
 
 class TestMedFilt(TestCase):
+    @dec.knownfailureif(_linux64bit,
+                        "Currently fails intermittently on 64-bit Linux")
     def test_basic(self):
         f = [[50, 50, 50, 50, 50, 92, 18, 27, 65, 46],
              [50, 50, 50, 50, 50,  0, 72, 77, 68, 66],