Re: c++/8442: Wrongful compiler error - file available

[Wolfgang Bangerth <bangerth@ticam.utexas.edu>]

The following reply was made to PR c++/8442; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: Juan Carlos Arevalo-Baeza <jcab@JCABs-Rumblings.com>
Cc: gcc-bugs@gcc.gnu.org, <gcc-prs@gcc.gnu.org>, <nobody@gcc.gnu.org>,
   <gcc-gnats@gcc.gnu.org>
Subject: Re: c++/8442: Wrongful compiler error - file available
Date: Mon, 4 Nov 2002 10:58:35 -0600 (CST)

 >    Yes, Spirit is a complex beast. I'm sorry about that. I've tried
 > extracting the error bits, but I've been uncuccessful so far. It seems
 
 Start from the .ii file you have. First delete all the # lines, I use the 
 following perl script for that usually
   perl -pi -s 's/^#.*\n//g;' your_file.ii
 (This way, gcc tells you the real location in the file where something is 
 happening, not the location in the file from which you generated the .ii 
 file.) Then start deleting parts of the file that are not necessary to 
 show the problem. (Function bodies, classes that are only referenced in 
 the function bodies you deleted, classes and namespaces that were only 
 used in classes and namespaces you deleted, etc). In the beginning, the 
 pieces you scrap are usually small, but the blocks can become very large 
 at the end, so don't be scared if you don't make much progress in the 
 beginning.
 
 This is a tedious task, and may take an hour or two, but in the end you
 usually end up with something that has 10-50 lines of code and still shows
 the problem. With such an example, it is also possible for someone who is
 not used to your code to see whether this is wrong or right. Otherwise, it
 is very hard to see...
 
 Regards
   Wolfgang
 
 -------------------------------------------------------------------------
 Wolfgang Bangerth              email:           bangerth@ticam.utexas.edu
                                www: http://www.ticam.utexas.edu/~bangerth