[cpp-threads] pthreads (was: RE: C++ Connections proposal)

[Peter Dimov]

Alexander Terekhov wrote:
> On 4/26/05, Peter Dimov <pdimov at mmltd.net> wrote:
>>> ELEM * tail = ++m_tail, --m_tail; // "as if" m_tail, compiler is
>>> just nastily legal
>> 
>> Pretty evil. This is, I believe, an illegal transformation in this
>> particular case, but one needs to resort to very arcane language
>> lawyering to support that claim, and it's possible to argue the
>> matter for years without a definite conclusion.
> 
> Note that without definite conclusion (that such transformation is
> illegal), pthreads read-write locking (and alike stuff) is nothing
> but joke, so to speak.

Worse, everything is a joke.

int x;

// thread 1

void f()
{
}

// thread 2

void g()
{
}

// undefined behavior