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Re: C pre-DR#8: va_list objects
"Joseph S. Myers" <firstname.lastname@example.org> writes:
> This pre-DR is for the question Jakub raised in
> <http://gcc.gnu.org/ml/gcc-patches/2004-09/msg02802.html> of the validity
> of using arrays of va_list (which cause an ICE on some platforms; bug
> 17716) and structures containing va_list. It's clear what the semantics
> should be for the use of any lvalue for an object of type va_list, and as
> a quality of implementation matter we should accept uses with any such
> expression and compile them correctly without ICE, but it isn't clear
> whether they are strictly valid (though if not I think that is more likely
> an oversight in the standard than a deliberate decision).
Note that even if there does have to be a va_list declared in the function,
arrays of va_list and structures containing them must still work because
the function (or a called function) could use va_copy with them.