Neil Jerram <n...@ossau.uklinux.net> writes:

> Neil Jerram <n...@ossau.uklinux.net> writes:
>
>> My nightly build of master, on a relatively slow old machine, is
>> hanging, on most nights, in `make check'.
>
> FWIW, I realized that my backtraces are very similar to those reported
> by Dale here:
> http://www.mail-archive.com/bug-gu...@gnu.org/msg05066.html.
>
> So I'll try to answer Ludo's question:
>
>> The other thread should have call sem_post() to release this one.  Can
>> you print the value of ‘GC_suspend_ack_sem’?

0x4001d424 in __kernel_vsyscall ()
(gdb) p GC_suspend_ack_sem
$1 = 0

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