1 files changed, 5 insertions, 1 deletions
diff --git a/include/llvm/CallGraphSCCPass.h b/include/llvm/CallGraphSCCPass.h
index d5ff17c..fc9feda 100644
--- a/include/llvm/CallGraphSCCPass.h
+++ b/include/llvm/CallGraphSCCPass.h
@@ -22,6 +22,7 @@
 #define LLVM_CALL_GRAPH_SCC_PASS_H
 
 #include "llvm/Pass.h"
+#include "llvm/Analysis/CallGraph.h"
 
 namespace llvm {
 
@@ -45,7 +46,10 @@ struct CallGraphSCCPass : public Pass {
   /// non-recursive (or only self-recursive) functions will have an SCC size of
   /// 1, where recursive portions of the call graph will have SCC size > 1.
   ///
-  virtual bool runOnSCC(const std::vector<CallGraphNode *> &SCC) = 0;
+  /// SCC passes that add or delete functions to the SCC are required to update
+  /// the SCC list, otherwise stale pointers may be dereferenced.
+  ///
+  virtual bool runOnSCC(std::vector<CallGraphNode *> &SCC) = 0;
 
   /// doFinalization - This method is called after the SCC's of the program has
   /// been processed, allowing the pass to do final cleanup as necessary.