Re: sizeof() segfault and mutex initialization?

[Stefan Olsson <stefan at snon dot net>]

Phil Edwards wrote:

> > Is it possible/ok to call __gthread_objc_mutex_allocate?
> >    
>
> No/no.  They aren't available to C++.  But we can define one ourselves,
> or maybe (doubtful) add one to the gthr-*.h files.
I have lots to learn about the inner workings of libstdc++ and it might 
be a dumb question but what would the downside of adding this function be?

>  
>
> > How can this be done?
> >    
>
> You can do a malloc followed by __GTHREAD_MUTEX_INIT_FUNCTION.  Look at
> the messy code I just committed to config/cpu/generic/atomicity.h and the
> bottom of src/misc-inst.cc for how some of that works.
>  
Sorry, don't understand. As specified in gthr.h:
    __GTHREAD_MUTEX_INIT_FUNCTION
               some systems can't initialize a mutex without a
               function call.  On such systems, define this to a
               function which looks like this:
                 void __GTHREAD_MUTEX_INIT_FUNCTION (__gthread_mutex_t *)
               Don't define __GTHREAD_MUTEX_INIT in this case

Since gthr-posix.h defines __GTHREAD_MUTEX_INIT the 
__GTHREAD_MUTEX_INIT_FUNCTION is not available.

What am I missing here?

Brgds

/Stefan

--
Experience is what you get when you were expecting something else.