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In all these cases we know the value with signed type is not negative so the cast is safe. libstdc++-v3/ChangeLog: * include/bits/deque.tcc (deque::_M_shrink_to_fit): Cast difference_type to size_type to avoid -Wsign-compare warning. * include/std/spanstream (basic_spanbuf::seekoff): Cast streamoff to size_t to avoid -Wsign-compare warning.
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.