Re: Variable arguments magic in Ada to C code

[lutz@iks-jena.de (Lutz Donnerhacke)]

* Florian Weimer wrote:
>lutz@iks-jena.de (Lutz Donnerhacke) writes:
>> * Andreas Almroth wrote:
>>>The first argument passed works just fine, but the rest are not interpreted
>>>very well by the C code. An 32/64 bits issue?
>>
>> No, but I do not understand the problem:
>> ARM B.3 says in Note (12):
>>    A C function that takes a variable number of arguments can correspond to
>>    several Ada subprograms, taking various specific numbers and types of
>>    parameters.
>
>The calling convention of a C function which expects a variable number
>of arguements can differ considerably from one which does not.

This would cause major problems when compiling legal C code without advanced
prototypes for such function.

>Your example is not portable.

What is the portable (right(TM)) solution?