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The following makes the C++98 locale init path follow the way the C++11 performs initialization. This way we deal with pthread_once failing, falling back to non-threadsafe initialization which, given we initialize from the library, should be serialized by the dynamic loader already. PR libstdc++/112351 libstdc++-v3/ * src/c++98/locale.cc (locale::facet::_S_initialize_once): Check whether _S_c_locale is already initialized. (locale::facet::_S_get_c_locale): Always perform non-threadsafe init when threadsafe init failed.
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.