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RE: c++ exceptions in shared library results in crash
- From: Danny Smith <dannysmith at clear dot net dot nz>
- To: Cygwin <cygwin at cygwin dot com>
- Cc: rainer at hochreiter dot at
- Date: Thu, 13 Jan 2005 22:23:02 +1300
- Subject: RE: c++ exceptions in shared library results in crash
- Reply-to: Danny Smith <dannysmith at users dot sourceforge dot net>
From: "Rainer Hochreiter"
--------------------------------------------------------------------------------
> throwing an exception in the shared library results in a core dump of the
> binary executable - but only for the cross-compiled version!
cygwin and mingw gcc sources contain a local patch to allow
throwing C++ exceptions across dll/exe boundaries. These
local hacks have never been submitted to FSF GCC lists. Without
this patch, one option you have to allow exceptions across dll/exe
boudaries is to build libstdc++.a and libgcc.a as dlls. This is not done by GCC
makefiles, but can be done done manually. Libstdc++ dll relies on auto-import
functionality, so watch your pseudo-runtime-relocs (a techno name for "blue
psuede shoes")
Someone may well ask why this local patchset has not been
submitted for review on GCC lists, and that would be a good
question. My answer would be that they need more work before
submission..
Danny
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