Re: could not freshen shared index ..../sharedindex.0000000000000000000000000000000000000000'

From: Duy Nguyen <pclouds@gmail.com>
Date: Feb 8, 2019, 10:02 UTC
Message-ID: <20190208100221.GA22283@ash>
In-Reply-To: <CAE5ih79DuU5Wrk4p+wpQX3j6bgyA2_ZgXYJX-tGvZpYhWazWqA@mail.gmail.com>

On Wed, Feb 06, 2019 at 10:25:25AM +0000, Luke Diamand wrote:

> I've recently started seeing a lot of this message when doing a rebase:
> 
>    warning: could not freshen shared index
> '/home/ldiamand/git/dev_full/.git/worktrees/gcc8-take-2/sharedindex.0000000000000000000000000000000000000000'

There are only two places in the code that could print this. The one in read_index_from() can't happen unless is_null_oid() is broken (very very unlikely).

The other one is in write_locked_index() which could happen in theory but I don't understand how it got there. If you could build git, could you try this patch and see if it helps?

-- 8< --

diff --git a/read-cache.c b/read-cache.c
index f68b367613..5ad71478dc 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -3165,6 +3165,7 @@ int write_locked_index(struct index_state *istate, struct lock_file *lock,
 		fill_fsmonitor_bitmap(istate);
 
 	if (!si || alternate_index_output ||
+	    (si && is_null_oid(&si->base_oid)) ||
 	    (istate->cache_changed & ~EXTMASK)) {
 		if (si)
 			oidclr(&si->base_oid);
-- 8< --


> (There's a repo called dev_full, and I've got a worktree where I'm
> working on my 3rd attempt to make it work with gcc8).
> 
> That file doesn't actually exist but there are a bunch of
> sharedindex.XXX files in there with more convincing looking names.
> 
> 2.20.1.611.gfbb209baf1
--
Duy