gcc4 and local statics

[Christopher Faylor]

On Wed, May 18, 2005 at 11:51:55AM -0700, Brian Dessent wrote:
>Corinna Vinschen wrote:
>
>> While this might help to avoid... something, I'm seriously wondering
>> what's wrong with this expression.  Why does each new version of gcc
>> add new incompatibilities?
>
>I think I've figured this out.  PR/13684 added thread safety to
>initialization of local statics.[1]  It does this by wrapping the call
>to the contructor around __cxa_guard_acquire and __cxa_guard_release,
>which are supposed to prevent two threads from both calling the
>constructor at the same time.

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