using "next" with "auto"

[ausairman]

Pretty simple question really; why is this giving me an error:

for (auto iB = next(B->begin(),B_size), lim_iB = B->end(); iB != lim_iB; iB++) {
  // error C3538: in a declarator-list 'auto' must always deduce to the same type
}

I don't see why this doesn't work; I had initially tried this:

for (auto iB = B->begin() + B_size, lim_iB = B->end(); iB != lim_iB; iB++) {
  // error C3538: in a declarator-list 'auto' must always deduce to the same type
}

Which also didn't work; although I would have thought the use of "next" would fix it. What could "next" possibly return other than an iterator type??

The following compiles, but it's a ugly and probably more expensive:

for (auto iB = next(B->begin(),B_size), lim_iB = next(B->end(),0); iB != lim_iB; iB++) {
  // error C3538: in a declarator-list 'auto' must always deduce to the same type
}

[JLBorges]

This was accepted as a bug by Microsoft.
https://connect.microsoft.com/VisualStudio/feedback/details/545958#details

I would guess that a Visual studio update would have fixed it.

[ausairman]

Thanks for that. FYI the VS11 developer build no longer has this bug, but it seems vs2010 will retain it..