Fixed bug#12403662 (formerly known as bug#60987): LOAD DATA LOCAL INFILE
can't parse relative paths "higher" than 3 levels up When trying to LOAD DATA LOCAL INFILE using a relative path with 3 or more levels up in the directory hierarchy, mysqld wrongly parses the path and as a consequence, can't find the file. This bug was introduced by patch for bug#58205. The reason for bug is that implementaiton of function cleanup_dirname() doesn't take into account the begin of buffer being processed during handling of path to file.
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@ -193,7 +193,7 @@ size_t cleanup_dirname(register char *to, const char *from)
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while (pos >= start && *pos != FN_LIBCHAR) /* remove prev dir */
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pos--;
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if (pos[1] == FN_HOMELIB ||
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(pos > start && memcmp(pos, parent, length) == 0))
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(pos >= start && memcmp(pos, parent, length) == 0))
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{ /* Don't remove ~user/ */
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pos=strmov(end_parentdir+1,parent);
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*pos=FN_LIBCHAR;
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