From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Peter  Garner" <peter.garner@toward.com>
To: egcs@cygnus.com
Cc: bothner@cygnus.com
Subject: No Subject
Date: Fri, 01 May 1998 21:25:00 -0000
Message-id: <9605020020.AA1704454@piglet.toward.com>
X-SW-Source: 1998-05/msg00026.html

Good Day All!


  I am rather new to ecgs so I apologize if I should have
sent this to egcs-bugs instead of egcs.

  I downloaded and built the 1990425 snapshot, since I am
in need of a more or less ISO compliant compiler.  I patched
streambuf.h and streambuf.cc so that it would throw an
ios::failure exception (that class being a child of
exception per the ISO draft.)  When I attempt to use this I
get a segmentation fault.  I thought you might like to see
this.  I have attached a file test.tar that contains the
difference between the original and patched h files (hdiff)
and the difference between the original and patched cc
file (ccdiff.txt) and fexcptst.cpp, and simple program
that causes the segmentation fault.

  Lastly, please pardon me, but I noticed that the original
threw an exception by pointer.  In general isn't that a
very bad idea?  I was always taught to write a copy
constructor for all exceptions and always throw by value,
never by new.  Doesn't a construct like :

throw new failure ( this ) 

lead to a memory leak since it becomes the responsibility
of the catch block to delete the pointer?

Thanks

Peter


waismail@quake.think.com