Teach -ast-print how to print trailing-return-types.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175864 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 7 insertions, 4 deletions

diff --git a/lib/AST/DeclPrinter.cpp b/lib/AST/DeclPrinter.cpp
index 333e321d40..dce4f9af25 100644
--- a/lib/AST/DeclPrinter.cpp
+++ b/lib/AST/DeclPrinter.cpp
@@ -542,9 +542,13 @@ void DeclPrinter::VisitFunctionDecl(FunctionDecl *D) {
       }
       if (!Proto.empty())
         Out << Proto;
-    }
-    else
+    } else {
+      if (FT && FT->hasTrailingReturn()) {
+        Out << "auto " << Proto << " -> ";
+        Proto.clear();
+      }
       AFT->getResultType().print(Out, Policy, Proto);
+    }
   } else {
     Ty.print(Out, Policy, Proto);
   }
diff --git a/test/SemaCXX/cxx11-ast-print.cpp b/test/SemaCXX/cxx11-ast-print.cpp
index afabf88bd5..66ff0f064a 100644
--- a/test/SemaCXX/cxx11-ast-print.cpp
+++ b/test/SemaCXX/cxx11-ast-print.cpp
@@ -1,7 +1,6 @@
 // RUN: %clang_cc1 -std=c++11 -ast-print %s | FileCheck %s
 
-// FIXME: Print the trailing-return-type properly.
-// CHECK: decltype(nullptr) operator "" _foo(const char *p, decltype(sizeof(int)));
+// CHECK: auto operator "" _foo(const char *p, decltype(sizeof(int))) -> decltype(nullptr);
 auto operator"" _foo(const char *p, decltype(sizeof(int))) -> decltype(nullptr);
 
 // CHECK: decltype(""_foo) operator "" _bar(unsigned long long);