commit 4fcb77e4e35db7fccb7a35ad650a85dc29bd2e73
author Tao Bao <tbao@google.com> Wed Oct 21 13:36:01 2015 -0700
committer Tao Bao <tbao@google.com> Wed Oct 21 17:03:18 2015 -0700
tree 567ef18fe468b7f61e0d94e0ff5bc7252fb9fe3d
parent c5a33b057071a0c2ea0374bbb28ba02ba2495aba

blockimgdiff.py: Fix the script error for BBOTA v1.

CL in [1] added an assertion to make sure an empty RangeSet cannot call
RangeSet.to_raw_string(). However, we may unintentionally hit that when
generating BBOTA v1 script (e.g. for "new" commands that always have
empty src_ranges).

[1] commit e8f756137c39fc3292014f2eab5f84c6e5135797

Change-Id: I1723606967f354ace9286d2b888fdbc80ba10e39

tools/releasetools/blockimgdiff.py

diff --git a/tools/releasetools/blockimgdiff.py b/tools/releasetools/blockimgdiff.py
index 42007eb..4415e57 100644
--- a/tools/releasetools/blockimgdiff.py
+++ b/tools/releasetools/blockimgdiff.py
@@ -355,7 +355,7 @@
       free_string = []
 
       if self.version == 1:
-        src_str = xf.src_ranges.to_string_raw()
+        src_str = xf.src_ranges.to_string_raw() if xf.src_ranges else ""
       elif self.version >= 2:
 
         #   <# blocks> <src ranges>