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RE: Trouble with C++ exceptions, code

But this uncaughtHandler DOES terminate execution of the program without
returning to the caller in all cases. So how does it not satisfy the C++
standard requirement?

I've been having the same problem on Darwin/MacOSX. However, I've noticed
that it seems to work fine if the entire program is one statically linked
executable, but it always fails if there are dynamic libraries involved.
(In particular, where the uncaughtHandler itself is in a dynamic library.)

The same code works fine for me under Solaris/Intel 8 and GCC 3.1 regardless
of whether or not dynamic libraries are used.

-John DeNisi


-----Original Message-----
From: Matt Austern [mailto:email@hidden]
Sent: Monday, July 28, 2003 12:57 PM
To: Bjvrn Giesler
Cc: email@hidden
Subject: Re: Trouble with C++ exceptions, code

On Monday, July 28, 2003, at 02:47 AM, Bjvrn Giesler wrote:

> void uncaughtHandler(void)
> {
> try {
> printf("Re-throwing.\n");
> throw;
> } catch(MyException& e) {
> printf("MyException\n");
> abort();
> } catch(...) {
> printf("Unknown\n");
> abort();
> }
> }
...
> int main(int argc, char **argv)
> {
> std::set_terminate(uncaughtHandler);
> return myFunction();
> }

You shouldn't do this. The C++ standard says (18.6.3.1, paragraph 2)
that a terminate handler "shall terminate execution of the program
without returning to the caller". The implementation relies on this
function meeting this requirement. Your uncaughtHandler doesn't
satisfy it.

--Matt
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