3 files changed, 30 insertions, 7 deletions
diff --git a/lib/asn1/doc/src/notes.xml b/lib/asn1/doc/src/notes.xml
index 1abe983221..bb15c9ff5f 100644
--- a/lib/asn1/doc/src/notes.xml
+++ b/lib/asn1/doc/src/notes.xml
@@ -32,6 +32,23 @@
   <p>This document describes the changes made to the asn1 application.</p>
 
 
+<section><title>Asn1 5.0.5</title>
+
+    <section><title>Fixed Bugs and Malfunctions</title>
+      <list>
+        <item>
+          <p>
+	    Dialyzer suppression has been added for the generated
+	    ASN.1 helper function to_bitstring/1 that previously
+	    created irrelevant warnings.</p>
+          <p>
+	    Own Id: OTP-13882 Aux Id: ERIERL-144 </p>
+        </item>
+      </list>
+    </section>
+
+</section>
+
 <section><title>Asn1 5.0.4</title>
 
     <section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/asn1/src/asn1ct_gen_per.erl b/lib/asn1/src/asn1ct_gen_per.erl
index 82e9326294..c09b0f47d1 100644
--- a/lib/asn1/src/asn1ct_gen_per.erl
+++ b/lib/asn1/src/asn1ct_gen_per.erl
@@ -1,7 +1,7 @@
 %%
 %% %CopyrightBegin%
 %%
-%% Copyright Ericsson AB 1997-2017. All Rights Reserved.
+%% Copyright Ericsson AB 1997-2018. All Rights Reserved.
 %%
 %% Licensed under the Apache License, Version 2.0 (the "License");
 %% you may not use this file except in compliance with the License.
@@ -47,14 +47,20 @@ dialyzer_suppressions(#gen{erule=per,aligned=Aligned}) ->
               false -> uper;
               true -> per
           end,
-    case asn1ct_func:is_used({Mod,complete,1}) of
+    suppress({Mod,complete,1}),
+    suppress({per_common,to_bitstring,2}),
+    emit(["    ok.",nl]).
+
+suppress({M,F,A}=MFA) ->
+    case asn1ct_func:is_used(MFA) of
 	false ->
 	    ok;
 	true ->
-	    emit(["    _ = complete(Arg),",nl])
-    end,
-    emit(["    ok.",nl]).
-
+	    Args =
+                [lists:concat(["element(",I,", Arg)"])
+                 || I <- lists:seq(1, A)],
+	    emit(["    ",{call,M,F,Args},com,nl])
+    end.
 
 gen_encode(Erules,Type) when is_record(Type,typedef) ->
     gen_encode_user(Erules,Type).
diff --git a/lib/asn1/vsn.mk b/lib/asn1/vsn.mk
index 4cd89089e9..39dfe8f4fb 100644
--- a/lib/asn1/vsn.mk
+++ b/lib/asn1/vsn.mk
@@ -1 +1 @@
-ASN1_VSN = 5.0.4
+ASN1_VSN = 5.0.5