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-rw-r--r--lib/hipe/cerl/erl_types.erl3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/hipe/cerl/erl_types.erl b/lib/hipe/cerl/erl_types.erl
index aa69b57fa2..2d86f166cd 100644
--- a/lib/hipe/cerl/erl_types.erl
+++ b/lib/hipe/cerl/erl_types.erl
@@ -618,7 +618,7 @@ t_decorate_with_opaque(T1, T2, Opaques) ->
end
end.
-decorate(?none=Type, _, _Opaques) -> Type;
+decorate(Type, ?none, _Opaques) -> Type;
decorate(?function(Domain, Range), ?function(D, R), Opaques) ->
?function(decorate(Domain, D, Opaques), decorate(Range, R, Opaques));
decorate(?list(Types, Tail, Size), ?list(Ts, Tl, _Sz), Opaques) ->
@@ -684,6 +684,7 @@ union_decorate(U1, U2, Opaques) ->
List = [A,B,F,I,L,N,T,M,Map],
DecList = [Dec ||
E <- List,
+ not t_is_none(E),
not t_is_none(Dec = decorate(E, Opaque, Opaques))],
t_sup([Union|DecList]).