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-rw-r--r--lib/compiler/src/cerl_inline.erl17
1 files changed, 15 insertions, 2 deletions
diff --git a/lib/compiler/src/cerl_inline.erl b/lib/compiler/src/cerl_inline.erl
index f5afa75b16..caff47dbcb 100644
--- a/lib/compiler/src/cerl_inline.erl
+++ b/lib/compiler/src/cerl_inline.erl
@@ -1822,6 +1822,14 @@ new_var(Env) ->
Name = env__new_vname(Env),
c_var(Name).
+%% The way a template variable is used makes it necessary
+%% to make sure that it is unique in the entire function.
+%% Therefore, template variables are atoms with the prefix "@i".
+
+new_template_var(Env) ->
+ Name = env__new_tname(Env),
+ c_var(Name).
+
residualize_var(R, S) ->
S1 = count_size(weight(var), S),
{ref_to_var(R), st__set_var_referenced(R#ref.loc, S1)}.
@@ -2183,7 +2191,7 @@ make_template(E, Vs0, Env0) ->
T = make_data_skel(data_type(E), Ts),
E1 = update_data(E, data_type(E),
[hd(get_ann(T)) || T <- Ts]),
- V = new_var(Env1),
+ V = new_template_var(Env1),
Env2 = env__bind(var_name(V), E1, Env1),
{set_ann(T, [V]), [V | Vs1], Env2};
false ->
@@ -2198,7 +2206,7 @@ make_template(E, Vs0, Env0) ->
Env2 = env__bind(V, E1, Env1),
{T, Vs1, Env2};
_ ->
- V = new_var(Env0),
+ V = new_template_var(Env0),
Env1 = env__bind(var_name(V), E, Env0),
{set_ann(V, [V]), [V | Vs0], Env1}
end
@@ -2564,6 +2572,11 @@ env__is_defined(Key, Env) ->
env__new_vname(Env) ->
rec_env:new_key(Env).
+env__new_tname(Env) ->
+ rec_env:new_key(fun(I) ->
+ list_to_atom("@i"++integer_to_list(I))
+ end, Env).
+
env__new_fname(A, N, Env) ->
rec_env:new_key(fun (X) ->
S = integer_to_list(X),