Extended Description

#include
#include

using namespace std;

size_t test (vector &strings) {
return strings.begin().length();
}

We get this error:

error: no member named 'length' in '__gnu_cxx::__normal_iterator<std::basic_string *, std::vector<std::basic_string, std::allocator<std::basic_string>>>'; did you mean to use '->' instead of '.'?

It'd be nice to say something like:

error: no member named 'length' in 'vector::iterator' (aka '...'); did you mean to use '->' instead of '.'?

i.e. use the spelling in the declaration of vector::begin, scoped to the spelling used to declare 'strings'.

(If it matters, GCC doesn't do any better.)