Folks, I've just re-opened the issue #3677, since I did not receive any specific feedback on how to resolve it. In the ticket it's claimed that the issue is fixed. However, for the question about how to obtain the patch it was answered that there is a belief the patch is checked in somewhere into the trunk. I completely understand that Boost is free and does not provide any warranty for quality and reliability of the libraries. However, I hope that there is a strong interest in Boost community for that. To my knowledge, the issue is cross-platform and may broke more applications than stated in the ticket. It is a pure regression: boost 1.39 is known to work. The issue is a showstopper, at least for FreeBSD: I may not update the boost to 1.41, because this action breaks working applications. The desired is any definite decision on the issue. Preferably, a fix or a workaround. Alexander Churanov, maintainer of devel/boost-*