[PyQt] Problem catching exception from SIP-wrapped function

[Arve Knudsen]

On Tue, Sep 22, 2009 at 7:27 PM, Phil Thompson
<phil at riverbankcomputing.com>wrote:

> On Tue, 22 Sep 2009 19:17:12 +0200, Arve Knudsen <arve.knudsen at gmail.com>
> wrote:
> > On Tue, Sep 22, 2009 at 6:28 PM, Phil Thompson
> > <phil at riverbankcomputing.com>wrote:
> >
> >> On Mon, 21 Sep 2009 18:40:35 +0200, Arve Knudsen
> <arve.knudsen at gmail.com>
> >> wrote:
> >> > Hi
> >> >
> >> > I have run into this problem where a C++ exception is not correctly
> >> > translated into Python on Linux (it works under VC++ on Windows). The
> >> > exception is apparently not caught as it should, but looking at the
> >> > SIP-generated sourcecode I cannot see why (there is a try/catch block
> >> > for
> >> > the exception). Any ideas as to what might be going wrong here? I have
> >> > tried
> >> > std::exception instead of my custom exception, and this gets
> translated
> >> > correctly to Python.
> >> >
> >> > Attached I have a simple library 'raiser', which is wrapped by the
> >> > Python
> >> > module 'raiser'. In order to build it, first build a shared library
> >> > from
> >> > 'raiser.cpp', then run 'configure.py' and make.
> >>
> >> Works fine for me on Linux with the current SIP snapshot. I did change
> >> your
> >> code first to make everything in-line so it wasn't necessary to build a
> >> separate library.
> >
> >
> > By inlining you remove the problem of interest, which is to propagate an
> > exception from one library to another. It also works for me when
> inlining,
> > so try my original version please.
>
> That implies it's a build system issue. Can you send me the Makefile you
> are using to build the library so that I know I'm exactly reproducing what
>  you are doing.


For this particular case, you can do the simplest thing possible: g++
-shared -o libraiser.so raiser.cpp.

Arve
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