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Re: -fno-tree-cselim not working?


Andrew Haley <aph-gcc@littlepinkcloud.COM> writes:

> The problem is code like this:
> 
> int counter;
> 
> ...
> 
>   if (we_hold_counters_mutex)
>     counter++;
> 
> This is legal POSIX threads code: counter is not accessed when we do
> not hold the mutex.  According to POSIX we do not have to declare
> volatile memory that we only access when we hold a mutex.

Where does POSIX say that?

Ian


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