commit 2a3a2dc33c7e5cbd9da95ece2eec0c100e9fbc14
author dcashman <dcashman@google.com> Mon Jul 06 15:51:06 2015 +0000
committer Android (Google) Code Review <android-gerrit@google.com> Mon Jul 06 15:51:07 2015 +0000
tree a01d41b1e2624b99c91db3a494cb5551b586694c
parent a80307b88efe12f5f604d9657ade824f83b69c20
parent 19eeccdaf2dde3d1021b12266a12c33e332546cf

Merge "Allow init to create /mnt/sdcard symlink." into mnc-dev

tools/releasetools/sparse_img.py

diff --git a/tools/releasetools/sparse_img.py b/tools/releasetools/sparse_img.py
index 49b3a67..7019f00 100644
--- a/tools/releasetools/sparse_img.py
+++ b/tools/releasetools/sparse_img.py
@@ -221,9 +221,14 @@
           nonzero_blocks.append(b)
           nonzero_blocks.append(b+1)
 
-    out["__ZERO"] = rangelib.RangeSet(data=zero_blocks)
-    out["__NONZERO"] = rangelib.RangeSet(data=nonzero_blocks)
-    out["__COPY"] = clobbered_blocks
+    assert zero_blocks or nonzero_blocks or clobbered_blocks
+
+    if zero_blocks:
+      out["__ZERO"] = rangelib.RangeSet(data=zero_blocks)
+    if nonzero_blocks:
+      out["__NONZERO"] = rangelib.RangeSet(data=nonzero_blocks)
+    if clobbered_blocks:
+      out["__COPY"] = clobbered_blocks
 
   def ResetFileMap(self):
     """Throw away the file map and treat the entire image as