Error description

I tried to access a variable from a module but had mistyped the name, so it tried to throw an error with message "name '%s' not found in '%s'". Instead of doing that, it threw a different error with message "'Rf_translateChar' must be called on a CHARSXP, but got 'symbol'" because the C function assumes the first argument is a symbol. As an example:

box::use(utils)
x <- list(utils = utils)
x$utils$test

I'm not sure what the exact expected output would be, but any of the following error messages would suffice:

• stop(sprintf("name '%s' not found in '%s'", "test", "x$utils"))
• stop(sprintf("name '%s' not found in '%s'", "test", attr(x$utils, "name")))
• stop(sprintf("name '%s' not found in '%s'", "test", attr(x$utils, "spec")$alias))

That being said, I think your C code to generate such an error is unnecessarily complex, and could be greatly simplified with the use of .External2 instead of .Call. I could submit a PR if you like!

R version

platform       x86_64-w64-mingw32               
arch           x86_64                           
os             mingw32                          
crt            ucrt                             
system         x86_64, mingw32                  
status                                          
major          4                                
minor          3.3                              
year           2024                             
month          02                               
day            29                               
svn rev        86002                            
language       R                                
version.string R version 4.3.3 (2024-02-29 ucrt)
nickname       Angel Food Cake

‘box’ version

[1] ‘1.2.0’