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* include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace throw() with _GLIBCXX_NOTHROW. (__atomic_add_dispatch): Return after performing atomic increment. From-SVN: r273167
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.