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-rw-r--r--lib/asn1/src/asn1ct_check.erl28
-rw-r--r--lib/asn1/test/asn1_SUITE_data/InfObj.asn16
2 files changed, 27 insertions, 17 deletions
diff --git a/lib/asn1/src/asn1ct_check.erl b/lib/asn1/src/asn1ct_check.erl
index 81bb78f9d4..779e4f1455 100644
--- a/lib/asn1/src/asn1ct_check.erl
+++ b/lib/asn1/src/asn1ct_check.erl
@@ -645,7 +645,7 @@ check_class_fields(S,[F|Fields],Acc) ->
Cat =
case asn1ct_gen:type(asn1ct_gen:get_inner(Type2#type.def)) of
Def when is_record(Def,'Externaltypereference') ->
- {_,D} = get_referenced_type(S,Def),
+ {_,D} = get_referenced_type(S, Def, true),
D;
{undefined,user} ->
%% neither of {primitive,bif} or {constructed,bif}
@@ -2923,7 +2923,7 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
inlined=IsInlined},
TestFun =
fun(Tref) ->
- MaybeChoice = get_non_typedef(S, Tref),
+ {_, MaybeChoice} = get_referenced_type(S, Tref, true),
case catch((MaybeChoice#typedef.typespec)#type.def) of
{'CHOICE',_} ->
maybe_illicit_implicit_tag(choice,Tag);
@@ -2941,7 +2941,7 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
case Def of
Ext when is_record(Ext,'Externaltypereference') ->
{RefMod,RefTypeDef,IsParamDef} =
- case get_referenced_type(S,Ext) of
+ case get_referenced_type(S, Ext) of
{undefined,TmpTDef} -> %% A parameter
{get(top_module),TmpTDef,true};
{TmpRefMod,TmpRefDef} ->
@@ -3261,14 +3261,6 @@ check_type(S=#state{recordtopname=TopName},Type,Ts) when is_record(Ts,type) ->
check_type(_S,Type,Ts) ->
exit({error,{asn1,internal_error,Type,Ts}}).
-get_non_typedef(S, Tref0) ->
- case get_referenced_type(S, Tref0) of
- {_,#typedef{typespec=#type{def=#'Externaltypereference'{}=Tref}}} ->
- get_non_typedef(S, Tref);
- {_,Type} ->
- Type
- end.
-
%%
%% Simplify the backends by getting rid of an #'ObjectClassFieldType'{}
@@ -3321,10 +3313,10 @@ get_innertag(_S,#'ObjectClassFieldType'{type=Type}) ->
%% get_class_def(S, Type) -> #classdef{} | 'none'.
get_class_def(S, #typedef{typespec=#type{def=#'Externaltypereference'{}=Eref}}) ->
- {_,NextDef} = get_referenced_type(S, Eref),
+ {_,NextDef} = get_referenced_type(S, Eref, true),
get_class_def(S, NextDef);
get_class_def(S, #'Externaltypereference'{}=Eref) ->
- {_,NextDef} = get_referenced_type(S, Eref),
+ {_,NextDef} = get_referenced_type(S, Eref, true),
get_class_def(S, NextDef);
get_class_def(_S, #classdef{}=CD) ->
CD;
@@ -4416,11 +4408,13 @@ get_referenced_value(S, T) ->
end.
get_referenced_type(S, T) ->
+ get_referenced_type(S, T, false).
+
+get_referenced_type(S, T, Recurse) ->
case do_get_referenced_type(S, T) of
- {_,#type{def=#'Externaltypereference'{}=ERef}} ->
- get_referenced_type(S, ERef);
- {_,#type{def=#'Externalvaluereference'{}=VRef}} ->
- get_referenced_type(S, VRef);
+ {_,#typedef{typespec=#type{def=#'Externaltypereference'{}=ERef}}}
+ when Recurse ->
+ get_referenced_type(S, ERef, Recurse);
{_,_}=Res ->
Res
end.
diff --git a/lib/asn1/test/asn1_SUITE_data/InfObj.asn b/lib/asn1/test/asn1_SUITE_data/InfObj.asn
index 10d0040a26..420cc99c4c 100644
--- a/lib/asn1/test/asn1_SUITE_data/InfObj.asn
+++ b/lib/asn1/test/asn1_SUITE_data/InfObj.asn
@@ -424,6 +424,22 @@ TiAliasSet TI-ALIAS ::= {
...
}
+--
+-- Test using an alias for a class.
+--
+
+ALIAS-CONTAINER ::= CLASS {
+ &id INTEGER UNIQUE,
+ &obj INDIRECT-CLASS
+}
+
+INDIRECTED-CLASS ::= CLASS {
+ &id INTEGER UNIQUE,
+ &Type
+}
+
+INDIRECT-CLASS ::= INDIRECTED-CLASS
+
END