block_queue: do not add empty spans

2017-08-15 11:38:59 +01:00 · 2017-08-15 11:38:59 +01:00 · 6edb1b3e46
commit 6edb1b3e46
parent 70495665f9
1 changed files with 2 additions and 0 deletions
--- a/src/cryptonote_protocol/block_queue.cpp
+++ b/src/cryptonote_protocol/block_queue.cpp
@ -189,6 +189,8 @@ std::pair<uint64_t, uint64_t> block_queue::reserve_span(uint64_t first_block_hei
    ++i;
    ++span_length;
  }
+  if (span_length == 0)
+    return std::make_pair(0, 0);
  MDEBUG("Reserving span " << span_start_height << " - " << (span_start_height + span_length - 1) << " for " << connection_id);
  add_blocks(span_start_height, span_length, connection_id, time);
  set_span_hashes(span_start_height, connection_id, hashes);