Trac crashes when trying to Blame ASCII file with subversion-1.7.5

[rwb@…]

If using Subversion 1.7.5 and viewing a content in blame mode for an ascii file Trac crashes by assertion svn_uri_is_canonical.

Blame works fine with other subversion clients (AnkhSVN/TortoiseSVN/etc.) so it appears there's something wrong with the way Trac is creating the request.

trac.log

Trac[browser] DEBUG: Rendering preview of node build-release.bat@None with mime-type application/x-dos-batch; charset=utf-8
Trac[api] DEBUG: Trying to render HTML preview using PygmentsRenderer [blame, lineno]
Trac[svn_fs] INFO: opening ra_local session to 'file:///opt/subversion/repository/[redacted]/trunk/Scripts/build-release.bat'

apache.log

apache2: /build/buildd/subversion-1.7.5/subversion/libsvn_subr/dirent_uri.c:1519: uri_skip_ancestor: Assertion `svn_uri_is_canonical(child_uri, ((void *)0))' failed.

Ticket #11167 references the same svn_uri_is_canonical error when using subversion 1.7.x and trac 0.12-stable.

[Christian Boos]

So how is this issue different than #11167? The latter has been fixed, but no released version of Trac 1.0 contains it yet (will be 1.0.2). So the crucial information missing here is, which revision of branches/1.0-stable​ are you using? It must be at least r11790 in order to contain the fix for #11167.

[anonymous]

Replying to cboos:

So how is this issue different than #11167? The latter has been fixed, but no released version of Trac 1.0 contains it yet (will be 1.0.2). So the crucial information missing here is, which revision of branches/1.0-stable​ are you using? It must be at least r11790 in order to contain the fix for #11167.

Thanks for the quick reply.

I figured there may indeed be a fix in the pipeline but because my filenames are ascii only I chose to take out a new ticket (in case the previous fix was for a slightly different issue).

I'm using Trac installed with easy_install, version 1.0. I'm not sure how to find the revision number of the installed code base though.

[Christian Boos]

Ok, it's 1.0 then, so you don't have that fix yet. Please try to either apply that patch manually or (easier) to install from svn (see TracDownload#Tracstable for guidance). If it then works, you can close this as a duplicate.

[rwb <rwb@…>]

Ok I'll give it a shot and let you know.

Last question; what is the recommended installation method for Trac in a production environment?

[rwb <rwb@…>]

I've installed 1.0-stable from source and everything looks good so I'm closing this ticket as a duplicate. Thanks again for your help.

I'm still a little unsure about the version numbers used for Trac releases though. I noticed after building 1.0-stable that the version displayed is 1.0.2dev-r0. What's considered stable/development? I was under the impression that 1.0-stable would be stable, not dev and the wiki isn't too clear. Could you please clarify the releases when you have a chance?

[Christian Boos]

Replying to rwb <rwb@…>:

[…] the version displayed is 1.0.2dev-r0. What's considered stable/development?

Well, the dev here indicates the in-progress status of the code on the stable branch. When it's time to do the actual release, we remove the dev label. The dev-r… part is supposed to indicate the revision number, but that's broken for Subversion ≥ 1.7.

A less equivocal label could be pre instead of dev.