Improper vector syntax generates "c++ exception (unknown reason)"

[davharris]

Summary:

Attempting to compile the following (invalid) Stan program produces an error with c++ exception (unknown reason)

parameters {
  vector v[4];
}

(The [4] should occur immediately after vector, not after v).

Current Output:

> stanc(model_code  = "parameters{vector c[4]}")
Error in stanc(model_code = "parameters{vector c[4]}") : 
  c++ exception (unknown reason)

Expected Output:

A more helpful error message, including the line number and (ideally) a description of the invalid syntax.

Current Version:

Rstan v2.17.2

[davharris]

Wait, maybe something else is wrong. Closing until I figure it out... sorry for any inconvenience

[davharris]

Yeah, this is actually because of stan-dev/rstan#431, not a Stan problem. Again, sorry for cluttering up the issue queue.