Segmentation Fault on Flex 2.5.33

> Hi all ,
>
> I have a segmentation fault in file.lex on linux 64 bits in this line of file_lex.c : 
> 
> yy_hold_char = *++yy_c_buf_p
>
> I have no more indication for the debuger.
> When I turn on linux32 I have no segmentation but an error in another file.

> I'm using flex 2.5.33
>
> Is this a Flex bug!!!!!!!!
> Best regards
>