diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp b/clang/lib/Serialization/ASTWriterStmt.cpp
index 2b331a97..1e801d0 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -401,7 +401,25 @@
   Record.AddASTTemplateArgumentListInfo(E->getTemplateArgsAsWritten());
   for (const TemplateArgument &Arg : TemplateArgs)
     Record.AddTemplateArgument(Arg);
-  Record.push_back(E->isSatisfied());
+  const ASTConstraintSatisfaction &Satisfaction = E->getSatisfaction();
+  Record.push_back(Satisfaction.IsSatisfied);
+  if (!Satisfaction.IsSatisfied) {
+    Record.push_back(Satisfaction.NumRecords);
+    for (const auto &DetailRecord : Satisfaction) {
+      Record.AddStmt(const_cast<Expr *>(DetailRecord.first));
+      auto *E = DetailRecord.second.dyn_cast<Expr *>();
+      Record.push_back(E == nullptr);
+      if (E)
+        Record.AddStmt(E);
+      else {
+        auto *Diag = DetailRecord.second.get<std::pair<SourceLocation,
+                                                       StringRef> *>();
+        Record.AddSourceLocation(Diag->first);
+        Record.AddString(Diag->second);
+      }
+    }
+  }
+
   Code = serialization::EXPR_CONCEPT_SPECIALIZATION;
 }