bk commit into 5.1 tree (jonas:1.2605)

[jonas]

Below is the list of changes that have just been committed into a local
5.1 repository of jonas. When jonas does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet@stripped, 2008-01-23 10:29:29+01:00, jonas@stripped +1 -0
  Merge perch.ndb.mysql.com:/home/jonas/src/51-telco-gca
  into  perch.ndb.mysql.com:/home/jonas/src/telco-6.1
  MERGE: 1.2403.9.101

  storage/ndb/include/util/Bitmask.hpp@stripped, 2008-01-23 10:29:27+01:00, jonas@stripped +0 -0
    Auto merged
    MERGE: 1.21.1.1

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	jonas
# Host:	perch.ndb.mysql.com
# Root:	/home/jonas/src/telco-6.1/RESYNC

--- 1.22/storage/ndb/include/util/Bitmask.hpp	2008-01-23 10:29:32 +01:00
+++ 1.23/storage/ndb/include/util/Bitmask.hpp	2008-01-23 10:29:32 +01:00
@@ -139,6 +139,7 @@
 
   /**
    * setField - Set bitfield at given position and length (max 32 bits)
+   * Note : length == 0 not supported.
    */
   static void setField(unsigned size, Uint32 data[],
       unsigned pos, unsigned len, Uint32 val);
@@ -146,6 +147,7 @@
 
   /**
    * getField - Get bitfield at given position and length
+   * Note : length == 0 not supported.
    */
   static void getField(unsigned size, const Uint32 data[],
 		       unsigned pos, unsigned len, Uint32 dst[]);
@@ -936,7 +938,10 @@
 		      unsigned pos, unsigned len, Uint32 dst[])
 {
   assert(pos + len <= (size << 5));
-  
+  assert (len != 0);
+  if (len == 0)
+    return;
+
   src += (pos >> 5);
   Uint32 offset = pos & 31;
   * dst = (* src >> offset) & (len >= 32 ? ~0 : (1 << len) - 1);
@@ -955,6 +960,9 @@
 		      unsigned pos, unsigned len, const Uint32 src[])
 {
   assert(pos + len <= (size << 5));
+  assert(len != 0);
+  if (len == 0)
+    return;
 
   dst += (pos >> 5);
   Uint32 offset = pos & 31;