diff --git a/clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp b/clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp
--- a/clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp
+++ b/clang/lib/Analysis/FlowSensitive/DataflowEnvironment.cpp
@@ -918,7 +918,7 @@
 
   OS << "ExprToVal:\n";
   for (auto [E, V] : ExprToVal)
-    OS << "  [" << E << ", " << V << "]\n";
+    OS << "  [" << E << ", " << V << ": " << *V << "]\n";
 
   OS << "LocToVal:\n";
   for (auto [L, V] : LocToVal) {