[PATCH] [Sema] Maintain ellipsis location when transforming lambda captures

[Meador Inge]

http://reviews.llvm.org/D10590

Files:
  lib/Sema/TreeTransform.h
  test/SemaCXX/cxx1y-generic-lambdas.cpp

Index: lib/Sema/TreeTransform.h
===================================================================
--- lib/Sema/TreeTransform.h
+++ lib/Sema/TreeTransform.h
@@ -9368,7 +9368,8 @@
     }
 
     // Capture the transformed variable.
-    getSema().tryCaptureVariable(CapturedVar, C->getLocation(), Kind);
+    getSema().tryCaptureVariable(CapturedVar, C->getLocation(), Kind,
+                                 EllipsisLoc);
   }
   if (!FinishedExplicitCaptures)
     getSema().finishLambdaExplicitCaptures(LSI);
Index: test/SemaCXX/cxx1y-generic-lambdas.cpp
===================================================================
--- test/SemaCXX/cxx1y-generic-lambdas.cpp
+++ test/SemaCXX/cxx1y-generic-lambdas.cpp
@@ -933,3 +933,18 @@
     };
   }(0)(0);
 }
+
+namespace PR23716 {
+template<typename T>
+auto f(T x) {
+  auto g = [](auto&&... args) {
+    auto h = [args...]() -> int {
+      return 0;
+    };
+    return h;
+  };
+  return g;
+}
+
+auto x = f(0)();
+}

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