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The #ifdef RADIXCHAR directive should be moved one line up so that it also guards the outer if statement, or else when RADIXCHAR is not defined the outer if statement will end up nonsensically guarding the declaration of output_length_upper_bound a few lines below it. libstdc++-v3/ChangeLog: PR libstdc++/98377 * src/c++17/floating_to_chars.cc (__floating_to_chars_precision): Fix mistake.
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.