nobu	2018-01-15 14:27:11 +0900 (Mon, 15 Jan 2018)

  New Revision: 61838

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=61838

  Log:
    tool/ruby_vm/models/attribute.rb: void for empty arguments

  Modified files:
    trunk/tool/ruby_vm/models/attribute.rb
Index: tool/ruby_vm/models/attribute.rb
===================================================================
--- tool/ruby_vm/models/attribute.rb	(revision 61837)
+++ tool/ruby_vm/models/attribute.rb	(revision 61838)
@@ -32,13 +32,23 @@ class RubyVM::Attribute https://github.com/ruby/ruby/blob/trunk/tool/ruby_vm/models/attribute.rb#L32
   end
 
   def declaration
-    argv = @insn.opes.map {|o| o[:decl] }.join(', ')
+    opes = @insn.opes
+    if opes.empty?
+      argv = "void"
+    else
+      argv = opes.map {|o| o[:decl] }.join(', ')
+    end
     sprintf '%s %s(%s)', @type, name, argv
   end
 
   def definition
-    argv = @insn.opes.map {|o| "MAYBE_UNUSED(#{o[:decl]})" }.join(",\n    ")
-    argv = "\n    #{argv}\n" if @insn.opes.size > 1
+    opes = @insn.opes
+    if opes.empty?
+      argv = "void"
+    else
+      argv = opes.map {|o| "MAYBE_UNUSED(#{o[:decl]})" }.join(",\n    ")
+      argv = "\n    #{argv}\n" if opes.size > 1
+    end
     sprintf "%s\n%s(%s)", @type, name, argv
   end
 end

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