On Wed, Jan 30, 2019 at 01:36:17PM +0100, Otto Moerbeek wrote:
> On Wed, Jan 30, 2019 at 01:21:55PM +0100, Jeremie Courreges-Anglas wrote:
>
> > On Wed, Jan 30 2019, Otto Moerbeek <[email protected]> wrote:
> > > Hi,
> > >
> > > net/powerdns does not work well on sparc64. It is a C++ program that
> > > uses exceptions quite extensively. The case I'm running into is a
> > > unknown item in a config file. The code should catch the exception and
> > > exit gracefully with an proper error message, but instead a catch-all
> > > is being hit:
> > >
> > > Jan 30 13:12:42 Reading random entropy from '/dev/urandom'
> > > Jan 30 13:12:42 Loading '/usr/local/lib/pdns/libgsqlite3backend.so'
> > > Jan 30 13:12:42 This is a standalone pdns
> > > Jan 30 13:12:42 Listening on controlsocket in
> > > '/var/run/pdns.controlsocket'
> > > terminate called after throwing an instance of 'PDNSException'
> > > terminate called recursively
> > > Abort trap (core dumped)
> > >
> > > Is C++ exception handling a known broken thing on sparc64?
> > >
> > > Any suggested remedy or should the port just be marked broken for
> > > sparc64?
> > >
> > > On amd64 the config file error is handled correctly.
> >
> > I've noticed this in the last sparc64 bulk build report:
> >
> >
> > http://build-failures.rhaalovely.net//sparc64/2019-01-10/net/amule,-daemon.log
> >
> > I haven't looked into the details yet. It might be a fluke, or it might
> > support your "exceptions are broken" theory.
>
> This is reproducable on 6.3 and 6.4, so it is not recent breakage.
>
> I'll try to write a test program.
>
> -Otto
>
The test program below already shows the problem when compiled with eg++
(and clang++ for that matter). This is using the most recent snap.
The base C++ compiler does produce the correct result.
$ eg++ x.cc && ./a.out
terminate called after throwing an instance of 'ex'
terminate called recursively
Abort trap (core dumped)
$ c++ x.cc && ./a.out
Catching...
$
-Otto
#include <iostream>
class ex {
};
void f(void)
{
throw ex();
}
int main()
{
try {
f();
}
catch (const ex & myex) {
std::cout << "Catching..." << std::endl;
}
}
