Merge #7992: Extend #7956 with one more test.

269a440 Add test for dbwrapper iterators with same-prefix keys. (Matt Corallo)
6030625 test: Add more thorough test for dbwrapper iterators (Wladimir J. van der Laan)
84c13e7 chain: Add assertion in case of missing records in index db (Wladimir J. van der Laan)

1 files changed, 1 insertions, 0 deletions

diff --git a/src/chain.cpp b/src/chain.cpp
index 32f6480f8..77e924e70 100644
--- a/src/chain.cpp
+++ b/src/chain.cpp
@@ -93,6 +93,7 @@ CBlockIndex* CBlockIndex::GetAncestor(int height)
             pindexWalk = pindexWalk->pskip;
             heightWalk = heightSkip;
         } else {
+            assert(pindexWalk->pprev);
             pindexWalk = pindexWalk->pprev;
             heightWalk--;
         }