From: Brian Warner <warner@lothar.com>
Date: Thu, 1 Sep 2011 16:05:43 +0000 (-0700)
Subject: improve the storage/mutable.py asserts even more
X-Git-Tag: allmydata-tahoe-1.9.0a2~63
X-Git-Url: https://git.rkrishnan.org/?a=commitdiff_plain;h=01b5124d0af5e6fe8aceead539f1f86f784e7533;p=tahoe-lafs%2Ftahoe-lafs.git

improve the storage/mutable.py asserts even more
---

diff --git a/src/allmydata/storage/mutable.py b/src/allmydata/storage/mutable.py
index e21c41dd..447e6bcc 100644
--- a/src/allmydata/storage/mutable.py
+++ b/src/allmydata/storage/mutable.py
@@ -28,8 +28,10 @@ from allmydata.storage.common import UnknownMutableContainerVersionError, \
 # 9   ??        n*92    extra leases
 
 
-assert struct.calcsize(">L") == 4 # The struct module doc says that L's are 4 bytes in size.
-assert struct.calcsize(">Q") == 8 # The struct module doc says that Q's are 8 bytes in size (at least with big-endian ordering).
+# The struct module doc says that L's are 4 bytes in size., and that Q's are
+# 8 bytes in size. Since compatibility depends upon this, double-check it.
+assert struct.calcsize(">L") == 4, struct.calcsize(">L")
+assert struct.calcsize(">Q") == 8, struct.calcsize(">Q")
 
 class MutableShareFile: