Bjorn Reese wrote:

> That is a good question. According to my reading of C99, char and float
> are not compatible [6.2.7] even after default argument promotion, so
> char * and float * are not compatible either [6.7.5.1/2, 6.2.5/27].
> Getting an incompatible pointer with va_arg() invokes undefined behavior
> [6.5.2.2/6].
>
> Another way to look at it is that void * and char * are required to have
> the same representation and alignment, but char * and float * are not
> [6.2.5/17].

You are correct.  The explicit cast is required.

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Erik Max Francis && max@alcyone.com && http://www.alcyone.com/max/
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