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From: Michael Rappazzo <rappazzo@gmail•com>
To: git@vger•kernel.org
Cc: j6t@kdbg•org, Michael Rappazzo <rappazzo@gmail•com>
Subject: [PATCH] gitk: fix error when remote tracking branch is deleted
Date: Sat, 13 Sep 2025 07:31:51 -0400	[thread overview]
Message-ID: <20250913113253.74362-1-rappazzo@gmail.com> (raw)

When a remote tracking branch is deleted (e.g., via 'git push --delete
origin branch'), the headids array entry for that branch is removed, but
upstreamofref may still reference it. This causes gitk to show an error
and prevents the Tags and Heads view from opening.

Fix by checking that headids($upstreamofref($n)) exists before accessing
it in the refill_reflist function.

Signed-off-by: Michael Rappazzo <rappazzo@gmail•com>
---
To reproduce the case:
```
mkdir sample-repo-remote &&
cd sample-repo-remote &&
git init --bare --initial-branch master && 
cd .. &&
git clone sample-repo-remote sample-repo &&
cd sample-repo &&
git commit --allow-empty -m "Sample commit" &&
git push origin master &&
git push origin master:master2 &&
git branch master2 origin/master2 &&
git push --delete origin master2
```
Then run gitk --all then bring up the "Tags and Heads" view.


 gitk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gitk b/gitk
index 6e4d71d585..3cfc9ef291 100755
--- a/gitk
+++ b/gitk
@@ -10294,7 +10294,9 @@ proc refill_reflist {} {
         if {![string match "remotes/*" $n] && [string match $reflistfilter $n]} {
             if {[commitinview $headids($n) $curview]} {
                 lappend localrefs [list $n H]
-                if {[info exists upstreamofref($n)] && [commitinview $headids($upstreamofref($n)) $curview]} {
+                if {[info exists upstreamofref($n)] && \
+                        [info exists headids($upstreamofref($n))] && \
+                        [commitinview $headids($upstreamofref($n)) $curview]} {
                     lappend trackedremoterefs [list $upstreamofref($n) R]
                 }
             } else {
-- 
2.51.0


             reply	other threads:[~2025-09-13 11:33 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-13 11:31 Michael Rappazzo [this message]
2025-09-14 18:32 ` [PATCH] gitk: fix error when remote tracking branch is deleted Johannes Sixt

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