Random crashes during interactive rebase #4564
Description
Describe the bug
sometimes, when I start an interactive rebase, after 1-2 seconds everything suddenly dies. This is the error message that I get:
panic: runtime error: slice bounds out of range [1:0]
goroutine 3870 [running]:
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers.(*BranchesHelper).AutoForwardBranches(0xc000147e00)
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/branches_helper.go:277 +0x5fd
github.com/jesseduffield/lazygit/pkg/gui.(*BackgroundRoutineMgr).backgroundFetch(0xc000329c50)
github.com/jesseduffield/lazygit/pkg/gui/background.go:131 +0x10a
github.com/jesseduffield/lazygit/pkg/gui.(*BackgroundRoutineMgr).startBackgroundFetch.func1.1({0xe89040?, 0xc003b77df8?})
github.com/jesseduffield/lazygit/pkg/gui/background.go:80 +0x17
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers.(*AppStatusHelper).WithWaitingStatusImpl.func1(0xc002299110?)
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/app_status_helper.go:69 +0x53
github.com/jesseduffield/lazygit/pkg/gui/status.(*StatusManager).WithWaitingStatus(0xc00034cbd0, {0xf1ea57, 0x8}, 0xc0002c2450, 0xc003b77ea0)
github.com/jesseduffield/lazygit/pkg/gui/status/status_manager.go:56 +0xd7
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers.(*AppStatusHelper).WithWaitingStatusImpl(0xc000011380, {0xf1ea57, 0x8}, 0xc003b77f08, {0x0, 0x0})
github.com/jesseduffield/lazygit/pkg/gui/controllers/helpers/app_status_helper.go:68 +0xc7
github.com/jesseduffield/lazygit/pkg/gui.(*BackgroundRoutineMgr).startBackgroundFetch.func1()
github.com/jesseduffield/lazygit/pkg/gui/background.go:79 +0x5a
github.com/jesseduffield/lazygit/pkg/gui.(*BackgroundRoutineMgr).goEvery.func1.1({0x870734?, 0xa78933?})
github.com/jesseduffield/lazygit/pkg/gui/background.go:112 +0x22
github.com/jesseduffield/gocui.(*Gui).onWorkerAux(0xc000218a80, 0x44e3b2?, {0x10e42c0?, 0xc002b3c020?})
github.com/jesseduffield/gocui@v0.3.1-0.20250421160159-82c9aaeba2b9/gui.go:703 +0x65
github.com/jesseduffield/gocui.(*Gui).OnWorker.func1()
github.com/jesseduffield/gocui@v0.3.1-0.20250421160159-82c9aaeba2b9/gui.go:690 +0x2b
created by github.com/jesseduffield/gocui.(*Gui).OnWorker in goroutine 275
github.com/jesseduffield/gocui@v0.3.1-0.20250421160159-82c9aaeba2b9/gui.go:689 +0x90
[Process exited 2]
To Reproduce
Steps to reproduce the behavior:
- start an interactive rebase (by pressing
i) - (move a couple commits here and there) -- don't know if this is actually required
- wait for a second or two
- (maybe) see error
Expected behavior
a lack of crash
Version info:
commit=, build date=, build source=nix, version=0.50.0, os=linux, arch=amd64, git version=2.49.0
git version 2.49.0
Additional context
despite the backtrace seemingly talking about background fetches, this problem only occurs when I'm in the interactive rebase mode
Note: please try updating to the latest version or manually building the latest master to see if the issue still occurs.