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[Bug c++/20099] -pthreads should imply -fno-threadsafe-statics
- From: "qrczak at knm dot org dot pl" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Feb 2005 17:31:31 -0000
- Subject: [Bug c++/20099] -pthreads should imply -fno-threadsafe-statics
- References: <20050220004607.20099.davids@webmaster.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From qrczak at knm dot org dot pl 2005-02-24 17:31 -------
> "multithreading is defined by an application design that ALLOWS FOR concurrent
> or simultaneous execution"
Initializers of static locals cannot execute concurrently, no matter whether
they are automatically locked or not.
The only thing which would change when you remove the automatically inserted
locking is that some programs which used to work are now broken, and that some
other programs which used to deadlock now invoke undefined behavior from
entering an initializer recursively.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20099