Compiler/CC3220: Missing strnlen?

I would not be surprised if it wasn't offered, I don't think it is part of standard C or C++.  C11 has a similar function, strnlen_s, but that likely has not made its way to the CGT yet.

You can likely find source for a generic implementation online; or you might role your own, perhaps using memchr.  Depending on the use-case, you might be able to spice things up with optimizations like MUST_ITERATE and restrict _nassert.

I found an implementation that seems to work.  I made some slight modifications and put it in a platform_config header so that I can just add a predefined symbol (MY_STRNLEN) if the compiler doesn't have strnlen

#ifdef MY_STRNLEN
   static inline size_t strnlen (const char *string, size_t length)
   {
       char *ret = memchr (string, 0, length);
       return ret ? ret - string : length;
   }
#endif