Re: C++ Exception handlin on mips [was Re: Mozilla...]
On Thu, Dec 20, 2001 at 06:47:17PM +0100, Matthias Klose wrote:
> Is this a problem, that you can work around using g++-3.0 on mips? I
> see the menu package up to date for mips. just wanting to reduce the
> severity of the report from `grave' to `important'.
Building with g++-3.0 fixes the problem - at least for the menu package.
But I don't know if switching to g++-3.0 as default c++ compiler for
mips is a good idea, since I have not used it much yet.
-- Guido
>
> > On Wed, Nov 28, 2001 at 03:29:31AM +0000, Colin Watson wrote:
> > > On Mon, 26 Nov 2001 at 19:01:21 +0100, Guido Guenther wrote:
> > > > This bug is triggered by a problem with C++ exception handling on
> > > > mips. So not a bug in menu itself but rather in g++-2.95.4
> > >
> > > So can this bug be reassigned to g++?
> > Yes. Discussion is at:
> > http://lists.debian.org/debian-mips/2001/debian-mips-200111/msg00090.html
>
> Guido Guenther writes:
> > On Mon, Nov 26, 2001 at 01:47:55PM -0500, Christopher C. Chimelis wrote:
> > >
> > > On Mon, 26 Nov 2001, Guido Guenther wrote:
> > >
> > > > Could you check the source code if these packages crash while messing
> > > > with C++ exceptions? I just had a quick look into the menu package and
> > > > it seems that C++ exception handling is broken on mips using g++-2.95.4.
> > > > A testcase like:
> > > >
> > > > #include <iostream.h>
> > > > #include <string>
> > > >
> > > > class ferror_open {
> > > > int a;
> > > > public:
> > > > ferror_open():a(2){};
> > > > int message(){
> > > > return a;
> > > > };
> > > > };
> > > >
> > > > int main()
> > > > {
> > > > try {
> > > > throw ferror_open();
> > > > } catch(ferror_open d){ cout << d.message() << endl;};
> > > > }
> > >
> > > Thanks for the testcase. I meant to make one when alpha started having EH
> > > problems awhile back, but never got to it....Matthias, I believe this one
> > > will also catch the case that I saw on alpha.
> >
> > Interesting enough the program works as expected when compiled with
> > -static like "g++ -ggdb -o throw-2.95 throw.cc" (linker bug?)
> > -- Guido
> >
> >
> > --
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>
--
This kind of limitation can lead administrators to do irrational things,
like install Windows. Clearly a fix was required. (lwn.net)
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