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Bug in readdir_r errno handling


readdir_r in newlib/libc/posix/readdir_r.c returns errno if getdents
fails or reaches the end of the directory (a return of 0). But
getdents only sets errno on negative returns. If a previous library
call had failed and set errno, it would keep this value and readdir_r
returns an error instead of 0 on EOF.

David Benjamin


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