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R dies on scalar/vector mismatch #375

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johnlaing opened this issue Sep 21, 2015 · 1 comment

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@johnlaing
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commented Sep 21, 2015

If I declare a function taking a scalar and call it with a vector, R dies. Ideally Rcpp would check the length of the input and throw.

I understand this is likely a non-trivial fix. Nevertheless...

Rcpp::sourceCpp(code='
#include <Rcpp.h>
// [[Rcpp::export]]

std::string ex(std::string x) {
  std::string y = x;
  return(y);
}
')

ex("foo") ## it works if I pass it a scalar
# [1] "foo"

ex(c("foo", "bar")) ## but explodes on a vector
# *** Error in `/usr/lib/R/bin/exec/R': free(): invalid pointer: 0x0000000002d15418 ***
# Aborted
@johnlaing

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commented Sep 22, 2015

Thanks, @eddelbuettel !

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