convert: fix assertion

maharmstone · Oct 6, 2021 · 903e70a · 903e70a
1 parent 0cf2225
commit 903e70a
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/ntfs2btrfs.cpp b/src/ntfs2btrfs.cpp
@@ -3373,9 +3373,12 @@ static void convert(ntfs& dev, enum btrfs_compression compression, enum btrfs_cs
  while (!runs.empty() && (runs.rbegin()->second.back().offset * cluster_size) + runs.rbegin()->second.back().length > device_size) {
  auto& r = runs.rbegin()->second;
 
- if (r.back().offset * cluster_size >= orig_device_size)
+ if (r.back().offset * cluster_size >= orig_device_size) {
  r.pop_back();
- else {
+
+ if (r.empty())
+ runs.erase(prev(runs.end()));
+ } else {
  uint64_t len = orig_device_size - (r.back().offset * cluster_size);
 
  if (len % cluster_size)