Are exception with gcc 2.95.2 thread-safe?

[Loren James Rittle]

> I try the attached progam on Linux, Sun, Aix:
> In a main procedure, a try block creates a thread, sleep 2s (let the
> thread to be run), then throw an exception. We expected that this
> exception will be catched in main and the program terminates. But this
> program will never terminate and the result is:
> Thread has started 
> Exception catched in thread 

> Is it a bug? Can we use exception in a multi-threading program?

Your program is operating as it should in the three environments I
have easy access to: Solaris, Linux and FreeBSD.  I suspect that there
is a reason why it isn't working for you.

Unfortunately, when you configure gcc, you have to explicitly inform
the process that you want thread safety!  E.g.:

../egcs/configure --enable-threads

Then, you have to provide a non-portable-between-gcc-based-
development-environments switch during both compilation and linking:

On Linux and FreeBSD:

g++ -pthread main.C

On Solaris:

g++ -pthreads main.C

On OSF:

EITHER g++ -pthread main.C OR g++ -threads main.C
(but note that depending on which switch you give, your program will
link against a different set of libraries)

Don't ask me why you need to use different options... ;-)

Regards,
Loren