Re: libstdc++/10093: Regression: Setting failbit in exceptions doesn't work

[Jerry Quinn <jlquinn@optonline.net>]

The following reply was made to PR libstdc++/10093; it has been noted by GNATS.

From: Jerry Quinn <jlquinn@optonline.net>
To: gcc-gnats@gcc.gnu.org, peturr02@ru.is, gcc-bugs@gcc.gnu.org,
 gcc-prs@gcc.gnu.org, libstdc++@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/10093: Regression: Setting failbit in exceptions doesn't
 work
Date: Sun, 23 Mar 2003 01:50:11 -0500

 I'm a bit confused by this bug.  What should the behavior be here?  To my
 simple reading of the standard, it seems that the code is operating correctly.
 
 The test case is designed to throw if failbit is set.  Failbit does get set,
 which causes the exception to be thrown.  However, it is caught in the
 exception handler and not rethrown.
 
 27.6.1.2.1 says that the exception is rethrown if badbit is set in the
 exception mask (and badbit is set), otherwise not.  This makes it sound like
 the _only_ way to get an exception from the formatted input functions is to
 set badbit in the exception mask.
 
 Petur, can you explain what I'm missing?
 
 Thanks
 Jerry Quinn