[Bug libstdc++/25191] exception_defines.h #defines try/catch

["hhinnant at apple dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #9 from hhinnant at apple dot com  2005-12-02 21:00 -------
(In reply to comment #8)
> Subject: Re:  exception_defines.h #defines try/catch
> 
> "hhinnant at apple dot com" <gcc-bugzilla@gcc.gnu.org> writes:
> 
> | ------- Comment #5 from hhinnant at apple dot com  2005-12-02 19:07 -------
> | (In reply to comment #2)
> | > I'd rather you work around this in objective-c or objective c++.
> | 
> | How?  I'm open to suggestions.
> 
> #undef them if you intend to include libstdc++ files and use try/catch
> with funny characters to mean something else with -fno-exceptions?

I'm sorry, I'm just not understanding what you're suggesting.  If you could
expound on your suggestion I would be most appreciative.  If it helps, here is
a demo file that I would like to have work with -fno-exceptions.

#include <list>
#include <vector>
#import <Cocoa/Cocoa.h>
#import "my_header.h"  // may have contain ObjC @try/@catch
#include <iostream>

int main()
{
//    ....
}

An alternative to my original suggested fix is to solve this problem in the FE
by parsing try/catch differently (e.g. as if they were if(true)/if(false)) in
system headers when -fno-exceptions.  Then we could just get rid of
exception_defines.h, and still have pretty std::headers.  Not being someone
with a lot of FE experience, I have more hesitation about this latter approach.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25191