[ECOS] eCos reference manual needs correction

[Ilija Stanislevik]

The eCos on-line reference manual
(http://ecos.sourceware.org/docs-2.0/ref/kernel-thread-create.html),
chapter Thread Entry Points and C++, gives an example which does not work.
The example states:
.
.

    fred* object = static_cast<fred*>(objptr);
.

It is the static cast which makes compiler unhappy. The variable object is a pointer, while objptr is of type cyg_addrword_t, itself being an unsigned int. Knowing this, it is obvious why the compiler complains.

The issue was solved with the 'dangerous' reinterpret_cast instead of static _cast:
.
.
    fred* object = reinterpret_cast<fred*>(objptr);
.

There is an other place within the example which needs the same intervention. Instead of
    …
    cyg_thread_create( …,
                      &fred::static_thread_aux,
                      static_cast<cyg_addrword_t>(&instance),
                      …);
    …
I used
    …
    cyg_thread_create( …,
                      &fred::static_thread_aux,
                      reinterpret_cast<cyg_addrword_t>(&instance),
                      …);
    …

Now I wonder if this is a general issue or it is limited to my Starter
Kit with AT91SAM926x for EB926x Evaluation Boards from Ronetix?

Is there a better, less 'dangerous' way to solve the issue?

Anyway, it seems that the manual needs to be corrected.

Thank you.


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