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Fix NoMethodError in TypeProf::Core::Type::Singleton #340

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Fix NoMethodError in TypeProf::Core::Type::Singleton #340

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2 changes: 1 addition & 1 deletion lib/typeprof/core/ast/sig_type.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -5,7 +5,7 @@ def self.typecheck_for_module(genv, changes, f_mod, f_args, a_vtx, subst)
a_vtx.each_type do |ty|
ty = ty.base_type(genv)
while ty
if ty.mod == f_mod
if ty.mod == f_mod && ty.is_a?(Type::Instance)
args_all_match = true
f_args.zip(ty.args) do |f_arg_node, a_arg_ty|
unless f_arg_node.typecheck(genv, changes, a_arg_ty, subst)
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