Re: Need a help

From: Zhidian Du (zdu_at_cs.nmsu.edu)
Date: Mon Sep 10 2001 - 20:59:31 BST


Dear Mr. Russell:

The OS I am using is  SunOs 5.8 + gcc 3.0 or Linux(??) + gcc 3.0.

When I use gcc 2.7, UPS can run greatly.

Now the problem appears.  I think it is the gcc 3.0 cause the problem.

Thanks.

Zhidian Du




Russell Browne wrote:
> 
> > Hello:
> >
> > When i use UPS to run a program, it is ok.  When I double click the
> > variables, it crashed.  Here is the info:
> >
> > Warning:  sizeof(bool) inconsistent across compile modules!
> >           This may be caused by compiling with different versions of
> > g++.
> >           (You may suppress this warning by setting the environment
> >           variable UPS_WARN_INCONSISTENT_BOOL=off)
> > Fatal internal error: bad number in parse_num (aborting) ...
> > Dumping core ... Abort
> >
> >
> > I compiled the UPS, it doesn't work.
> >
> > Need a help
> >
> >
> > Zhidian Du
> >
> 
> The warning results from using different compilers, or different versions
> of the same compiler, with different ideas about how big a bool is.
> 
> The warning was put in when g++ changed sizeof(bool) from 1 to 4, with
> version 2.7.3(?).  I think version 3.0 will go back to a one byte bool,
> but I haven't gotten my hands on version 3.0 yet.
> 
> If you're using different versions of g++ with different ideas about
> a basic data type, you should probably fix your builds to use the same
> version through out.  Otherwise, you're setting yourself up for some very
> hard to find bugs.
> 
> You could also get the warning by mixing the Sunpro and g++ compilers.
> This would be less likely to introduce bugs since the differerent
> name mangling schemes would prevent either compiler from calling
> the other directly.  But it might lead to the core dump you report,
> if UPS decides it is reading debug data from one compiler then starts
> reading debug data from another instead and sees something that doesn't
> make sense.
> 
> If that is the problem, you might be able to turn off -g on the compile
> line for one or the other compiler.  Of course, then you won't be able
> to debug that part of your code.
> 
> Finally, I also don't know whether anyone's tried using UPS on g++ 3.0
> compiled code.  I think 3.0 contains many changes, and probably breaks
> something for us.  Can anyone in the user's group fill me in on that?
> 
> Hope this helps.
> 
> Russ Browne
> Applied Microsystems Corp.


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