Re: [Gc] boehm-gc.c/gctest.c spurious failure

Hans Boehm <[email protected]> Wed, 21 Jan 2015 12:11:25 -0800
Newsgroups gmane.comp.programming.garbage-collection.boehmgc
Message-ID <CAPUmR1Zv7wk4dF0_v8iPfnTg4Lqa3_KjQavLB6EgutNWL=XH6A@mail.gmail.com>
I haven't had a chance to look at this carefully.  But the typed allocation
test looks a bit fishy.  It seems to allocate a 2000 byte object described
by a 320 bit entry bit map, each of which describes a pointer-sized word,
IIRC.  That worked fine once upon a time when we this code was written and
we only had 32-bit machines ...

Hans

On Mon, Jan 19, 2015 at 1:09 AM, Tom de Vries <[email protected]>
wrote:

> Hi,
>
> FYI, with gcc trunk on x86_64 Linux, I ran into PR64042: 'FAIL:
> boehm-gc.c/gctest.c -O2 execution test'. ( https://gcc.gnu.org/bugzilla/
> show_bug.cgi?id=64042 )
>
> The testcase gctest fails spuriously, a couple of times per 1000 runs.
>
> The failure has been reproduced by others, also on Darwin.
>
> Any information on this is appreciated.
>
> Thanks,
> - Tom
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