The following code is generated when building on windows which is causing invalid escape sequence errors in the build. The backslashes need escaping. I tried to fix this myself but failed. Additionally, it looks highly dubious that there are 7 identical lines of code...

gem_mrblib_mruby_class_ext_proc_init_syms(mrb_state *mrb)
{
  gem_mrblib_mruby_class_ext_proc_debug_file_2.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_3.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_4.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_5.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_6.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_1.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
  gem_mrblib_mruby_class_ext_proc_debug_file_0.filename_sym = mrb_intern_lit(mrb,"C:\james_projects\GitHub\jrf\libs\mruby\mrbgems\mruby-class-ext\mrblib\module.rb");
}