fix instance var decl

Author: v0dro

lib/rubex/ast/statement/c_ptr_decl.rb

@@ -17,7 +17,9 @@ def analyse_statement(local_scope, extern: false)
           @type = Helpers.determine_dtype @type, @ptr_level
           if @value
             @value.analyse_for_target_type(@type, local_scope)
+            @value.allocate_temps(local_scope)
             @value = Helpers.to_lhs_type(self, @value)
+            @value.release_temps(local_scope)
           end
 
           @entry = local_scope.declare_var name: @name, c_name: @c_name,

spec/fixtures/instance_variables/instance_variables.rubex

@@ -17,6 +17,9 @@ class ToChar
   def bar
     char * b
     b = @foo
+
+    char * c = @foo
+    
     return b
   end
 end

spec/instance_variables_spec.rb

@@ -20,7 +20,7 @@
       end
     end
 
-    context "Black box testing" do
+    context "Black box testing", hell: true do
       it "compiles and checks for valid output" do
         setup_and_teardown_compiled_files(test_case) do |dir|
           require_relative "#{dir}/#{test_case}.#{os_extension}"