id summary reporter owner description type status milestone component version severity resolution keywords cc 10824 Boost.Thread 1.57 breaks Windows XP compatibility for SP2 and below. felixbruns@… timblechmann "The commit 04e3d918 [1] introduced a call to GetLogicalProcessorInformation [2], which is only supported on Windows XP SP3 (or x64) and above. Is Windows XP SP2 support officially dropped or was this an unintentional break? ---- (Can't submit direct links because of spam protection) (1): github.com/boostorg/thread/commit/04e3d918fbf31792b6553d6cc2002214ea671aa9 (2): msdn.microsoft.com/en-us/library/windows/desktop/ms683194%28v=vs.85%29.aspx" Bugs closed Boost 1.58.0 thread Boost 1.57.0 Problem fixed timblechmann