🚀 go-pugleaf

>Does ANSI say that structure assignment is done by member-wise copy or
>by bit-wise copying?

How would a standard-conforming program tell the difference?

>The reason I ask is that if it is a bit-wise copy, then any padding in
>a struct would have to have some (presumably inplementation defined)
>value written to it so that the padding bytes could be copied.

No, either the implementation has to use a method of copying that
will copy uninitialized memory (without causing faults, etc.), OR
it has to arrange that padding is initialized, OR it has to
do an element-by-element copy.  (Warning:  element-by-element
copies had better avoid problems with floating-point trapping NaNs
if the implementation supports them.)  I suspect most
implementations choose the first possibility.


					Gordon L. Burditt
					sneaky.lonestar.org!gordon