1 files changed, 13 insertions, 0 deletions
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index 8e8a54d..cbcf200 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -438,6 +438,19 @@ void cmListFileBacktrace::PrintCallStack(std::ostream& out) const
   }
 }
 
+size_t cmListFileBacktrace::Depth() const
+{
+  size_t depth = 0;
+  if (this->Cur == nullptr) {
+    return 0;
+  }
+
+  for (Entry* i = this->Cur->Up; i; i = i->Up) {
+    depth++;
+  }
+  return depth;
+}
+
 std::ostream& operator<<(std::ostream& os, cmListFileContext const& lfc)
 {
   os << lfc.FilePath;