Danny, I hope you don't object to being copied in... > -----Original Message----- > From: Charles Wilson [mailto:[EMAIL PROTECTED]] > Sent: Saturday, May 11, 2002 7:49 AM > To: Bob Friesenhahn > Cc: [EMAIL PROTECTED]; Robert Collins > Subject: Re: C++ exceptions don't work from Cygwin DLLs? > > > Bob Friesenhahn wrote: > > > I am attempting to get ImageMagick to work properly using > Cygwin DLLs. > > The C++ component is built as a DLL using the binutils auto-import > > feature and CVS libtool. The library works fine with the glaring > > exception that any C++ exception thrown from the library causes an > > immediate core dump. I have verified that C++ exceptions > do work if > > they are not thrown from a DLL, and the library passes all tests > > (including C++ exceptions) if it is built as a static library. > > > > Do you believe that C++ exceptions should be working with > Cygwin DLLs? > > > No, not yet. I don't know a whole lot about this, but I > think that we > need to have a gcc and libg++ that supports threads; and we > don't have > that yet. But that is supposedly a high priority. I think. I'm > forwarding this message to Robert Collins; he may be able to > clariy my > confusion. > > Robert -- what's the deal with C++ and exceptions under cygwin, again?
Single thread C++ programs should work fine. Exceptions from .dll's -may- be problematic. Danny knows more about this aspect than I do. He posted a summary message about gcc 3-something at one point that listed c++ exceptions and .dll's as an issue. As for multi-threaded C++ exceptions, they will sporadically fail unless a custom build gcc and libstdc++ and libgcc are used that has been build with --with-threads or --with-threads=posix or --with-threads=win32. Rob. _______________________________________________ Libtool mailing list [EMAIL PROTECTED] http://mail.gnu.org/mailman/listinfo/libtool
