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bug#19180: guile bug#19180: vacuum_weak_hash_table error

From: Anand Mohanadoss
Subject: bug#19180: guile bug#19180: vacuum_weak_hash_table error
Date: Wed, 22 Jun 2016 21:13:05 +0530

Hi Andy,

Thanks a lot for looking into this and your response!  Any idea when we will have a stable 2.2 release that we can move to given that 2.1 has been out for a few months.


On Wed, Jun 22, 2016 at 8:25 PM, Andy Wingo <address@hidden> wrote:
Hi :)

On Mon 15 Dec 2014 07:36, Anand Mohanadoss <address@hidden> writes:

> Here is what we changed in hashtab.c -
> 130a131
>> size_t orig_len = len;
> 137,138c138,144
> < assert (removed <= len);
> < len -= removed;
> ---
>> if (removed <= len)
>> len -= removed;
>> else
>> {
>> printf ("Vacuum weak hash table assert Table=%p len=%zi removed=%zi
> orig_len=%zi n_items=%zi\n", table, len, removed, orig_len,
>> len = 0;
>> }
> With this change, we got lines similar to the following printed
> periodically -
> Vacuum weak hash table assert Table=0x9bdb840 len=0 removed=1
> orig_len=2321 n_items=2321

I guess printing a warning is not worse than crashing.  I was unable to
make this table work in a reliable way in 2.0 without rewriting it, so
in 2.2 there's a new implementation with hopefully no bug in this

Ludovic what do you thing, should we just be sloppy in 2.0 and remove
the assertion?  I don't think it's fixable.  The other option I see is
to close as WONTFIX.


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