fix for issue 3862: test_array fails FreeBSD 7 amd64
FreeBSD 7's underlying malloc() is behaves differently to earlier versions
and seriously overcommits available memory on amd64. This may affect
other 64bit platforms in some circumstances, so the scale of the
problematic test is wound back.
Patch by Mark Dickinson, reviewed by Martin von Loewis.
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index 34a8f79..2efbc7d 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -1011,20 +1011,21 @@
minitemsize = 8
def test_alloc_overflow(self):
+ from sys import maxsize
a = array.array('d', [-1]*65536)
try:
- a *= 65536
+ a *= maxsize//65536 + 1
except MemoryError:
pass
else:
- self.fail("a *= 2**16 didn't raise MemoryError")
+ self.fail("Array of size > maxsize created - MemoryError expected")
b = array.array('d', [ 2.71828183, 3.14159265, -1])
try:
- b * 1431655766
+ b * (maxsize//3 + 1)
except MemoryError:
pass
else:
- self.fail("a * 1431655766 didn't raise MemoryError")
+ self.fail("Array of size > maxsize created - MemoryError expected")
tests.append(DoubleTest)