[Bug c++/13684] local static object variable constructed once but ctors and dtors called multiple times on same memory when called in multiple threads

[gianni at mariani dot ws]

------- Additional Comments From gianni at mariani dot ws  2004-07-15 02:16 -------
Andrew wrote:
> Basically allocation of static variables in functions are not done thread 
> safe, I do not think there is any way that GCC will be able to do this 
> efficiently, I would not use local static variables if you are 
> going to use threads.

Actually, it can be quite efficient on some platforms.  Also, since this is a
one-time thing, efficiency is not that big a deal.

This posting from Zack Weinberg indicates pretty much how it could be done in a
way that more-or-less works as efficiently as it does without thread safety.
http://gcc.gnu.org/ml/gcc/2002-08/msg00284.html

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13684