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Paul Eggert authored
Without this change, if the malloc arena is corrupted and then 'backtrace' is called, the backtrace can crash because 'backtrace' calls 'malloc'. For more, please see: https://sourceware.org/ml/libc-alpha/2015-02/msg00678.html * emacs.c (main): Initialize tables used by 'backtrace'. * sysdep.c (emacs_backtrace): Document the newly used part of the API.
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