rb_f_exec 641 include/ruby/intern.h NORETURN(VALUE rb_f_exec(int, const VALUE*)); rb_f_exec 7575 process.c rb_define_global_function("exec", rb_f_exec, -1); rb_f_exec 7601 process.c rb_define_singleton_method(rb_mProcess, "exec", rb_f_exec, -1);