Re: Ada array vs C pointer (call by reference)

["Jeffrey R. Carter" <spam.jrcarter.not@spam.acm.org>]

Adrian Hoe wrote:
> 
> Like those previous posts in this thread (by Maciej, Keith, et al), it
> depends on compiler implementation. The question is, the C library
> (which I am interfacing with) is compiled by unknown C compiler with
> unknown switches and the author cannot be contacted. The only
> documentation I have is the C header file. Can Ada safe implementation
> guarantee a safe interface in this case? Or rather, how Ada can
> guarantee a safe interface?

Interfaces.C should be considered an interface to some specific C compiler, not 
to C in the abstract. GNAT's version is an interface to gcc C, for example. 
Whether that compiler is the same as the one used to compile your library, or 
uses the same representations, is anyone's guess. But on most platforms, most C 
compilers use similar representations, so you're probably OK using Interfaces.C. 
If not, then you'd be in the same boat if you used a C compiler.

-- 
Jeff Carter
"Hello! Smelly English K...niggets."
Monty Python & the Holy Grail
08