From 4a2f0192e73db0c61c7b66dccfbe5bcd322bec9d Mon Sep 17 00:00:00 2001
From: Davis King <davis@dlib.net>
Date: Tue, 18 Oct 2016 22:54:34 -0400
Subject: [PATCH] Fixed a bug in the repeat layer that caused it to throw
 exceptions in some cases.

---
 dlib/dnn/core.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dlib/dnn/core.h b/dlib/dnn/core.h
index 6e3594074..6d806f49b 100644
--- a/dlib/dnn/core.h
+++ b/dlib/dnn/core.h
@@ -81,7 +81,6 @@ namespace dlib
                 resizable_tensor& 
             ) const
             {
-                DLIB_CASSERT(false,"This function should never be called");
             }
 
             friend void serialize(const repeat_input_layer&, std::ostream&){}
@@ -1681,6 +1680,11 @@ namespace dlib
         ) const
         {
             subnetwork.to_tensor(ibegin,iend,data);
+            // call to_tensor on the networks in details just to populate the
+            // _sample_expansion_factor values in those networks.  Other than that this
+            // call is a noop.  
+            for (auto& d : details)
+                d.to_tensor(ibegin, iend, data);
         }
 
         template <typename forward_iterator>