toStringz or not toStringz

[Regan Heath]

Sorry if this has been asked/answered before but I've been out of the loop  
for a while..

I was just thinking about the recent discussion on renaming toStringz and  
I wondered why we need to explicitly call it at all.  Why can't we have  
the compiler call it automatically whenever we pass a string, or char[] to  
an extern "C" function, where the parameter is defined as char*?

I believe some extern "C" functions are defined as taking ubyte* or byte*  
instead of char*, but in those cases I believe they are 'buffers' and have  
a supplied length as well, meaning there is no need for the trailing \0 in  
any case.

I am probably missing something obvious, but it seems like it might work.

Side note.. It bothers me a little that 'char' means utf-8 codepoint in D,  
and means unsigned byte in extern "C" definitions, but I can live with  
that.

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