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From: mazzanti@iei.pi.cnr.it (Franco Mazzanti)
Subject: Abnormal file objects
Date: 1996/12/13
Message-ID: <mazzanti-1312961721260001@131.114.200.115>#1/1
X-Deja-AN: 203925901
organization: IEI-CNR
newsgroups: comp.lang.ada
Date: 1996-12-13T00:00:00+00:00
List-Id: <comp.lang.ada>



Let us consider the following program fragment:

 ...
 select
    delay 5.0;
    Put_Line ("Timeout expired");
 then abort
   -- ask for password within the given timeout
   Put("Enter Password:");
   Get_Line(This_Password,Last);
 end select;

 If the timeout expires, maybe when Get_line was reading the data,
 can the underlying "file-object" become abnormal  because some assignment
 to it has been disrupted (as for 9.8.(21)) ?

 Notice that a very similar example is given in Reference Manual 
 (in 9.7(11)) and it would be unfortunate il the RM examples sugggested
 potentially erroneous programming styles.

Franco Mazzanti