Fix computation of linkage within nested lambdas.

 When nested lambdas are used in NSDMI's - this prevents infinite recursion.

See http://llvm-reviews.chandlerc.com/D1783 for Doug's approval regarding the code, and then request for some tests.

[On a related note, I need this patch so as to pass tests of transformations of nested lambdas returned from member functions]

llvm-svn: 191645

1 files changed, 18 insertions, 0 deletions

diff --git a/clang/test/SemaCXX/lambda-expressions.cpp b/clang/test/SemaCXX/lambda-expressions.cpp
index e8e2eb612a0..e2904247c4b 100644
--- a/clang/test/SemaCXX/lambda-expressions.cpp
+++ b/clang/test/SemaCXX/lambda-expressions.cpp
@@ -265,3 +265,21 @@ namespace TypeDeduction {
 #endif
   }
 }
+
+
+namespace lambdas_in_NSDMIs {
+  template<class T>
+  struct L {
+      T t{};
+      T t2 = ([](int a) { return [](int b) { return b; };})(t)(t);    
+  };
+  L<int> l; 
+  
+  namespace non_template {
+    struct L {
+      int t = 0;
+      int t2 = ([](int a) { return [](int b) { return b; };})(t)(t);    
+    };
+    L l; 
+  }
+}
\ No newline at end of file