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eCos reference manual needs correction
- From: Ilija Stanislevik <ilijas at siva dot com dot mk>
- To: ecos-discuss at sourceware dot org
- Date: Wed, 30 Apr 2008 11:03:51 +0200
- Subject: [ECOS] eCos reference manual needs correction
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
â
cyg_thread_create( â,
&fred::static_thread_aux,
static_cast<cyg_addrword_t>(&instance),
â);
â
I used
â
cyg_thread_create( â,
&fred::static_thread_aux,
reinterpret_cast<cyg_addrword_t>(&instance),
â);
â
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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