[Mingw-users] Threadsafe exceptions

[Mark R. <mi...@ma...>]

Dear List!

The subject of thread safety in mingw-gcc copiled code using exceptions
has been brought up many times over the last few years. It has
occasionally been described how to compile mingw to work correctly. One
question though remains unanswered:

Was there ever a _release_ of mingw that produced correct output for
multi-threaded exception-infested code? I have tested two versions
(version 5.1.4, containing gcc 3.4.5 (20060117), and a version bundled
with Dev-Cpp containing I think gcc 3.4.2) and found both to produce code
that crashes ("Abnormal Program Termination") when code like this

	{ throw 3; catch (int) { } }

is executed while more than one thread is running. (OK: Sometimes it
doesn't crash until there are more than two threads running, but that's
probably a timing issue.)

My test program uses glibmm to launch the threads. It was compiled with

	gcc.exe -Wall -mthreads -o main.exe main.cpp -l... -L... -I...

Options -o3 and -g make no differnence.

My Windows is Windows Professional 2000 with the latest Service Packs 
installed.

Have a good Sunday,
Mark