rb_dvar_defined  6868 compile.c      rb_dvar_defined(ID id, const rb_block_t *base_block)
rb_dvar_defined   591 ext/ripper/ripper.c #define rb_dvar_defined(id, base) 0
rb_dvar_defined   537 ext/ripper/ripper.y #define rb_dvar_defined(id, base) 0
rb_dvar_defined   591 parse.c        #define rb_dvar_defined(id, base) 0
rb_dvar_defined   537 parse.y        #define rb_dvar_defined(id, base) 0