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-rw-r--r--lib/diameter/src/compiler/diameter_codegen.erl2
-rw-r--r--lib/diameter/src/compiler/diameter_nowarn.erl41
2 files changed, 42 insertions, 1 deletions
diff --git a/lib/diameter/src/compiler/diameter_codegen.erl b/lib/diameter/src/compiler/diameter_codegen.erl
index 489f521f70..1e31c40afe 100644
--- a/lib/diameter/src/compiler/diameter_codegen.erl
+++ b/lib/diameter/src/compiler/diameter_codegen.erl
@@ -129,7 +129,7 @@ gen(hrl, Spec, Mod, Path) ->
gen(erl, Spec, Mod, Path) ->
Forms = [{?attribute, module, Mod},
{?attribute, compile, [{parse_transform, diameter_exprecs}]},
- {?attribute, compile, [nowarn_unused_function]},
+ {?attribute, compile, [{parse_transform, diameter_nowarn}]},
{?attribute, export, [{name, 0},
{id, 0},
{vendor_id, 0},
diff --git a/lib/diameter/src/compiler/diameter_nowarn.erl b/lib/diameter/src/compiler/diameter_nowarn.erl
new file mode 100644
index 0000000000..6c17af6563
--- /dev/null
+++ b/lib/diameter/src/compiler/diameter_nowarn.erl
@@ -0,0 +1,41 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2010-2011. All Rights Reserved.
+%%
+%% The contents of this file are subject to the Erlang Public License,
+%% Version 1.1, (the "License"); you may not use this file except in
+%% compliance with the License. You should have received a copy of the
+%% Erlang Public License along with this software. If not, it can be
+%% retrieved online at http://www.erlang.org/.
+%%
+%% Software distributed under the License is distributed on an "AS IS"
+%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+%% the License for the specific language governing rights and limitations
+%% under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%%
+%% A parse transform to work around dialyzer currently not
+%% understanding nowarn_unused_function except on individual
+%% functions. The include of diameter_gen.hrl by generated dictionary
+%% modules contains code that may not be called depending on the
+%% dictionary. (The relay dictionary for example.)
+%%
+%% Even called functions may contain cases that aren't used for a
+%% particular dictionary. This also causes dialyzer to complain but
+%% there's no way to silence it in this case.
+%%
+
+-module(diameter_nowarn).
+
+-export([parse_transform/2]).
+
+parse_transform(Forms, _Options) ->
+ [{attribute, ?LINE, compile, {nowarn_unused_function, {F,A}}}
+ || {function, _, F, A, _} <- Forms]
+ ++ Forms.
+%% Note that dialyzer also doesn't understand {nowarn_unused_function, FAs}
+%% with FAs a list of tuples.