> Contrary to what is claimed, at the time malloc and free were NOT thread
> safe.  Nor were they Ada task safe.  In those days there were no real
> threads.

Well, the successful five Mega-SLOC project never traced a problem to
the use of malloc and free.  And it had LOTS of tasking--in fact,
being an early Ada project, there was a heck of a lot of over-use
of Ada features.

Nested generics, multi-discriminant variant records, tasks everywhere, etc.
Any feature unique to Ada just HAD to be used if possible.