Re: regression in 92392b4

> On 2008.07.23 01:17:45 +0200, Pierre Habouzit wrote:
> >   Hi, here is a manual painful down-secting (opposed to a bisect ;P) I
> > did, since git in next cannot fetch on a regular basis for me. The
> > culprit seems to be commit  92392b4:
> > 
> >     ┌─(1:11)──<~/dev/scm/git 92392b4...>──
> >     └[artemis] git fetch
> >     remote: Counting objects: 461, done.
> >     remote: Compressing objects: 100% (141/141), done.
> >     remote: Total 263 (delta 227), reused 155 (delta 121)
> >     Receiving objects: 100% (263/263), 95.55 KiB, done.
> >     fatal: Out of memory, malloc failed
> >     fatal: index-pack failed
> >     [2]    16674 abort (core dumped)  git fetch
> > 
> >     ┌─(1:12)──<~/dev/scm/git 92392b4...>──
> >     └[artemis] git checkout -m HEAD~1; make git-index-pack
> >     Previous HEAD position was 92392b4... index-pack: Honor core.deltaBaseCacheLimit when resolving deltas
> >     HEAD is now at 03993e1... index-pack: Track the object_entry that creates each base_data
> >     GIT_VERSION = 1.5.6.3.3.g03993
> > 	CC index-pack.o
> > 	LINK git-index-pack
> > 
> >     ┌─(1:12)──<~/dev/scm/git 03993e1...>──
> >     └[artemis] git fetch
> >     remote: Counting objects: 461, done.
> >     remote: Compressing objects: 100% (141/141), done.
> >     remote: Total 263 (delta 227), reused 155 (delta 121)
> >     Receiving objects: 100% (263/263), 95.55 KiB, done.
> >     Resolving deltas: 100% (227/227), completed with 153 local objects.
> >     From git://git.kernel.org/pub/scm/git/git
> >        5ba2c22..0868a30  html       -> origin/html
> >        2857e17..abeeabe  man        -> origin/man
> >        93310a4..95f8ebb  master     -> origin/master
> >        559998f..e8bf351  next       -> origin/next
> > 
> > You can see the commit sha's in the prompt. 03993e1 is fine, 92392b4 is
> > broken, I've absolutely no clue about what happens.
> > 
> > All I can say is that at some point in get_data_from_pack, obj[1].idx
> > points to something that is *not* a sha so it's probably corrupted.
> > (from index-pack.c).
> 
> Here's how to reproduce:
> 
> #!/bin/bash
> 
> [ -d git-bug ] || \
> 	git clone git://git.kernel.org/pub/scm/git/git git-bug
> cd git-bug
> 
> git update-ref refs/remotes/origin/html 5ba2c22
> git update-ref refs/remotes/origin/man 2857e17
> git update-ref refs/remotes/origin/maint 2d9c572
> git update-ref refs/remotes/origin/master 93310a4
> git update-ref refs/remotes/origin/next 559998f
> git update-ref refs/remotes/origin/pu 010581c8
> 
> git reset --hard origin/master
> 
> sleep 1
> 
> git reflog expire --expire=0 --all
> 
> git repack -A -d -f --depth=10 --window=10
> git prune
> 
> git config core.deltaBaseCacheLimit 100
> 
> git fetch