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-rw-r--r--lib/compiler/src/v3_kernel.erl4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/compiler/src/v3_kernel.erl b/lib/compiler/src/v3_kernel.erl
index 3d2dbf2088..f4ba60e529 100644
--- a/lib/compiler/src/v3_kernel.erl
+++ b/lib/compiler/src/v3_kernel.erl
@@ -1467,7 +1467,9 @@ arg_val(Arg, C) ->
#k_map_pair{key=#k_literal{val=Key}} = Pair,
Key
end || Pair <- Es],
- ordsets:from_list(Keys)
+ %% multiple keys may have the same name
+ %% do not use ordsets
+ lists:sort(Keys)
end.
%% ubody_used_vars(Expr, State) -> [UsedVar]