Re: [boost] [regrex] Failure on newly added test regex_regress_threadedon Tru64/GCC

From: John Maddock (john_at_[hidden])
Date: 2006-08-08 08:36:47

Markus Schöpflin wrote:
> John Maddock wrote:
>
>> Markus Schöpflin wrote:
>>> For reference, see http://tinyurl.com/rm4dr and
>>> http://tinyurl.com/k53v2.
>>>
>>> Interestingly enough, the test passes on Tru64/CXX. Compiled with
>>> gcc
>>> 4.0.3 the test aborts with 'terminate called recursively', compiled
>>> with 3.4.4 it throws a SIGABRT.
>>>
>>> Is there anything I can do to help in debugging?
>>
>> Thanks Marcus, I had spotted that failure, but didn't know what to
>> do about it.  The fact that it's specific to gcc on that one
>> specific platform is particulary frustrating!
>>
>> I have to be honest: I'm not even sure how to go about debugging
>> this: basically the test program spawns 10 threads each of which
>> then runs the regex test code.  In other words it's a stress-test to
>> detect multi-threading issues.  Are there any known problems with
>> gcc and threading on that platform?
>
> With gcc 4.1 and later multi threading is simply broken on Tru64. But
> it should work with earlier version. IIRC, 3.x uses DEC threads and
> 4.x uses POSIX threads. That might explain the different behaviors
> we're observing.

Oh, hold on: regex uses POSIX threads, come to that so does Boost.Threads 
and the test driver program.  However, the threads lib tests all pass so I 
assumed it wasn't an issue as simple as this.  So is this just a case of 
"not supported"?

John.