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MDEV-10001 my_b_seek() may not work correctly after my_b_read() hits EOF

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applied the patch from  David Gow
This commit is contained in:
Sergei Golubchik 2016-06-15 13:53:19 +02:00
parent ecdf46daed
commit 1d21b22155
1 changed files with 3 additions and 0 deletions
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3
mysys/mf_iocache.c
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@ -507,6 +507,7 @@ int _my_b_read(register IO_CACHE *info, uchar *Buffer, size_t Count)
{
/* End of file. Return, what we did copy from the buffer. */
info->error= (int) left_length;
info->seek_not_done=1;
DBUG_RETURN(1);
}
/*
@ -524,6 +525,7 @@ int _my_b_read(register IO_CACHE *info, uchar *Buffer, size_t Count)
*/
info->error= (read_length == (size_t) -1 ? -1 :
(int) (read_length+left_length));
info->seek_not_done=1;
DBUG_RETURN(1);
}
Count-=length;
@ -572,6 +574,7 @@ int _my_b_read(register IO_CACHE *info, uchar *Buffer, size_t Count)
/* For a read error, return -1, otherwise, what we got in total. */
info->error= length == (size_t) -1 ? -1 : (int) (length+left_length);
info->read_pos=info->read_end=info->buffer;
info->seek_not_done=1;
DBUG_RETURN(1);
}
/*