1 files changed, 9 insertions, 1 deletions
diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h
index eb564672989..1d775dab67b 100644
--- a/clang/lib/Sema/TreeTransform.h
+++ b/clang/lib/Sema/TreeTransform.h
@@ -11552,6 +11552,13 @@ TreeTransform<Derived>::TransformLambdaExpr(LambdaExpr *E) {
                                                         NewCallOpType);
   }
 
+  // Transform the trailing requires clause
+  ExprResult NewTrailingRequiresClause;
+  if (Expr *TRC = E->getCallOperator()->getTrailingRequiresClause())
+    // FIXME: Concepts: Substitution into requires clause should only happen
+    //                  when checking satisfaction.
+    NewTrailingRequiresClause = getDerived().TransformExpr(TRC);
+
   // Create the local class that will describe the lambda.
   CXXRecordDecl *OldClass = E->getLambdaClass();
   CXXRecordDecl *Class
@@ -11572,7 +11579,8 @@ TreeTransform<Derived>::TransformLambdaExpr(LambdaExpr *E) {
       Class, E->getIntroducerRange(), NewCallOpTSI,
       E->getCallOperator()->getEndLoc(),
       NewCallOpTSI->getTypeLoc().castAs<FunctionProtoTypeLoc>().getParams(),
-      E->getCallOperator()->getConstexprKind());
+      E->getCallOperator()->getConstexprKind(),
+      NewTrailingRequiresClause.get());
 
   LSI->CallOperator = NewCallOperator;