Ignore SIGXFSZ. Fixes #490453.
diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
index 352fae0..abfee39 100644
--- a/Lib/test/test_largefile.py
+++ b/Lib/test/test_largefile.py
@@ -8,6 +8,15 @@
import test_support
import os, struct, stat, sys
+try:
+ import signal
+ # The default handler for SIGXFSZ is to abort the process.
+ # By ignoring it, system calls exceeding the file size resource
+ # limit will raise IOError instead of crashing the interpreter.
+ oldhandler = signal.signal(signal.SIGXFSZ, signal.SIG_IGN)
+except (ImportError, AttributeError):
+ pass
+
# create >2GB file (2GB = 2147483648 bytes)
size = 2500000000L