From 2394e94e831991348688831a384b088a424c7ace Mon Sep 17 00:00:00 2001 From: Roman Kagan Date: Fri, 27 Dec 2013 12:05:15 +0400 Subject: [PATCH] git-svn: workaround for a bug in svn serf backend Subversion serf backend in versions 1.8.5 and below has a bug(*) that the function creating the descriptor of a file change -- add_file() -- doesn't make a copy of its third argument when storing it on the returned descriptor. As a result, by the time this field is used (in transactions of file copying or renaming) it may well be released, and the memory reused. One of its possible manifestations is the svn assertion triggering on an invalid path, with a message svn_fspath__skip_ancestor: Assertion `svn_fspath__is_canonical(child_fspath)' failed. This patch works around this bug, by storing the value to be passed as the third argument to add_file() in a local variable with the same scope as the file change descriptor, making sure their lifetime is the same. * [ew: fixed in Subversion r1553376 as noted by Jonathan Nieder] Cc: Benjamin Pabst Signed-off-by: Eric Wong Reviewed-by: Jonathan Nieder Signed-off-by: Roman Kagan --- perl/Git/SVN/Editor.pm | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/perl/Git/SVN/Editor.pm b/perl/Git/SVN/Editor.pm index b3bcd476da..34e8af966c 100644 --- a/perl/Git/SVN/Editor.pm +++ b/perl/Git/SVN/Editor.pm @@ -304,8 +304,12 @@ sub C { my ($self, $m, $deletions) = @_; my ($dir, $file) = split_path($m->{file_b}); my $pbat = $self->ensure_path($dir, $deletions); + # workaround for a bug in svn serf backend (v1.8.5 and below): + # store third argument to ->add_file() in a local variable, to make it + # have the same lifetime as $fbat + my $upa = $self->url_path($m->{file_a}); my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat, - $self->url_path($m->{file_a}), $self->{r}); + $upa, $self->{r}); print "\tC\t$m->{file_a} => $m->{file_b}\n" unless $::_q; $self->chg_file($fbat, $m); $self->close_file($fbat,undef,$self->{pool}); @@ -323,8 +327,10 @@ sub R { my ($self, $m, $deletions) = @_; my ($dir, $file) = split_path($m->{file_b}); my $pbat = $self->ensure_path($dir, $deletions); + # workaround for a bug in svn serf backend, see comment in C() above + my $upa = $self->url_path($m->{file_a}); my $fbat = $self->add_file($self->repo_path($m->{file_b}), $pbat, - $self->url_path($m->{file_a}), $self->{r}); + $upa, $self->{r}); print "\tR\t$m->{file_a} => $m->{file_b}\n" unless $::_q; $self->apply_autoprops($file, $fbat); $self->chg_file($fbat, $m); -- 2.11.4.GIT