diff --git a/rstan/example/examplemodel.R b/rstan/example/examplemodel.R
index 3a2a509bf..141c2798e 100644
--- a/rstan/example/examplemodel.R
+++ b/rstan/example/examplemodel.R
@@ -1,5 +1,4 @@
-# create sysdata.rdat file for the example 
-# in rstan's doc 
+# create csv files for examples in rstan
 library(rstan)
 excode <- '
   transformed data {
@@ -27,6 +26,5 @@ excode <- '
 '
 
 exfit <- stan(model_code = excode, save_dso = FALSE, iter = 200, sample_file = "rstan_doc_ex.csv")
-save(exfit, file = "../rstan/R/sysdata.rda", compress = "xz")
 plot(exfit)
 print(exfit)
diff --git a/rstan/rstan/R/stanc.R b/rstan/rstan/R/stanc.R
index 678a2cebd..fa4e32c64 100644
--- a/rstan/rstan/R/stanc.R
+++ b/rstan/rstan/R/stanc.R
@@ -21,7 +21,7 @@ stanc <- function(file, model_code = '', model_name = "anon_model", verbose = FA
   if (is.na(obfuscate_name))  obfuscate_name <- FALSE
   # model_name in C++, to avoid names that would be problematic in C++. 
   model_cppname <- legitimate_model_name(model_name, obfuscate_name = obfuscate_name) 
-  r <- .Call("CPP_stanc", model_code, model_cppname)
+  r <- .Call("CPP_stanc220", model_code, model_cppname)
   # from the cpp code of stanc,
   # returned is a named list with element 'status', 'model_cppname', and 'cppcode' 
   r$model_name <- model_name  
diff --git a/rstan/rstan/src/init.cpp b/rstan/rstan/src/init.cpp
index 821bf8063..7052a3bd4 100644
--- a/rstan/rstan/src/init.cpp
+++ b/rstan/rstan/src/init.cpp
@@ -23,7 +23,7 @@ SEXP seq_permutation(SEXP conf);
 SEXP CPP_read_comments(SEXP file, SEXP n);
 SEXP stan_prob_autocovariance(SEXP v);
 SEXP is_Null_NS(SEXP ns);
-SEXP CPP_stanc(SEXP model_stancode, SEXP model_name);
+SEXP CPP_stanc220(SEXP model_stancode, SEXP model_name);
 SEXP CPP_stan_version(); 
 #ifdef __cplusplus
 }
@@ -40,7 +40,7 @@ static const R_CallMethodDef CallEntries[] = {
   CALLDEF(CPP_read_comments, 2),
   CALLDEF(stan_prob_autocovariance, 1),
   CALLDEF(is_Null_NS, 1),
-  CALLDEF(CPP_stanc, 2),
+  CALLDEF(CPP_stanc220, 2),
   CALLDEF(CPP_stan_version, 0),
   {NULL, NULL, 0}
 };
diff --git a/rstan/rstan/src/stanc.cpp b/rstan/rstan/src/stanc.cpp
index 56adc379e..9e7934736 100644
--- a/rstan/rstan/src/stanc.cpp
+++ b/rstan/rstan/src/stanc.cpp
@@ -12,7 +12,7 @@
 #include <Rcpp.h>
 #include <rstan/io/r_ostream.hpp> 
 
-RcppExport SEXP CPP_stanc(SEXP model_stancode, SEXP model_name);
+RcppExport SEXP CPP_stanc220(SEXP model_stancode, SEXP model_name);
 RcppExport SEXP CPP_stan_version(); 
 
 SEXP CPP_stan_version() {
@@ -28,7 +28,7 @@ SEXP CPP_stan_version() {
   END_RCPP
 } 
 
-SEXP CPP_stanc(SEXP model_stancode, SEXP model_name) { 
+SEXP CPP_stanc220(SEXP model_stancode, SEXP model_name) { 
   BEGIN_RCPP;
   static const int SUCCESS_RC = 0;
   static const int EXCEPTION_RC = -1;