id summary reporter owner description type status milestone component version severity resolution keywords cc 4048 thread::id formatting involves locale Andrey Semashev viboes "Originated from here: https://sourceforge.net/projects/boost-log/forums/forum/710022/topic/3605632 The thread::id formatting code relies on the stream's operator<<, which involves the locale installed into the stream. This can result in insertion of grouping delimiters and other decorations. This style of formatting is useful for regular numbers, but is inappropriate for thread identifiers. I would expect the thead::id to be always formatted as a hex value with no delimiters, regardless of the locale. " Bugs closed Boost 1.49.0 thread Boost 1.42.0 Problem fixed thread id io viboes