panic: runtime error: invalid memory address or nil pointer dereference

[l-margiela]

Hello, I've installed lsp using go get github.com/dborzov/lsp and when I tried to run lsp in any directory I've got error like this:

➜  empty  ls -a
.  ..
➜  empty  lsp
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x40 pc=0x403362]

goroutine 1 [running]:
runtime.panic(0x4fd180, 0x6502e8)
        /usr/lib/golang/src/pkg/runtime/panic.c:266 +0xb6
main.presentPath(0xc21004c640, 0x11, 0xc21004c820, 0x1b)
        /home/xaxes/.go/src/github.com/dborzov/lsp/paths.go:11 +0x32
main.renderSummary()
        /home/xaxes/.go/src/github.com/dborzov/lsp/render.go:20 +0x7b
main.render()
        /home/xaxes/.go/src/github.com/dborzov/lsp/render.go:15 +0x24
main.main()
        /home/xaxes/.go/src/github.com/dborzov/lsp/main.go:23 +0x245

goroutine 3 [sleep]:
time.Sleep(0xbebc200)
        /usr/lib/golang/src/pkg/runtime/time.goc:31 +0x31
main.func·002()
        /home/xaxes/.go/src/github.com/dborzov/lsp/utils.go:10 +0x26
created by main.setTimeoutTimer
        /home/xaxes/.go/src/github.com/dborzov/lsp/utils.go:12 +0x21

I'm using Fedora 20 and FS is XFS if it does matter

[dborzov]

heh, thanks for reporting that, will look into this

[rydn]

Yup... Me too, Fedora 21

FS is btrfs if it matters.

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x404b2e]

goroutine 1 [running]:
main.presentPath(0xc20803a8d0, 0x25, 0x0, 0x0)
    /home/ryan/.gocode/src/github.com/lsp/paths.go:11 +0x16e
main.renderSummary()
    /home/ryan/.gocode/src/github.com/lsp/fmt.go:58 +0x8f
main.render()
    /home/ryan/.gocode/src/github.com/lsp/fmt.go:53 +0x25
main.main()
    /home/ryan/.gocode/src/github.com/lsp/main.go:24 +0x372

goroutine 26 [sleep]:
main.func·002()
    /home/ryan/.gocode/src/github.com/lsp/utils.go:10 +0x27
created by main.setTimeoutTimer
    /home/ryan/.gocode/src/github.com/lsp/utils.go:12 +0x25

[langston-barrett]

Looks like Golang can't find the user's home dir. Perhaps logging a warning or having a default (maybe /home/[username] or /Users/[username] for OSX) would work better?

I can create a pull once we get an outline.

[voxadam]

I seem to be hitting this same bug.

[adam@Drogon]~/devel/go/src% lsp
--------------------------------------------------------------------------------------------------------------------------------------
                                                         bazil.org  dir(96 files)
                                                     bitbucket.org  dir(33 files)
                                                   code.google.com  dir(718 files)
                                                        github.com  dir(3699 files)
                                                        golang.org  dir(622 files)
                                                          gopkg.in  dir(85 files)
                                                     launchpad.net  dir(27 files)
--------------------------------------------------------------------------------------------------------------------------------------
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x40504e]

goroutine 1 [running]:
main.presentPath(0xc20801e400, 0x17, 0x0, 0x0)
        /home/adam/devel/go/src/github.com/dborzov/lsp/paths.go:11 +0x16e
main.renderSummary()
        /home/adam/devel/go/src/github.com/dborzov/lsp/fmt.go:61 +0x8f
main.render()
        /home/adam/devel/go/src/github.com/dborzov/lsp/fmt.go:56 +0x25
main.main()
        /home/adam/devel/go/src/github.com/dborzov/lsp/main.go:28 +0x508

goroutine 12 [sleep]:
main.func·002()
        /home/adam/devel/go/src/github.com/dborzov/lsp/utils.go:10 +0x27
created by main.setTimeoutTimer
        /home/adam/devel/go/src/github.com/dborzov/lsp/utils.go:12 +0x25
[adam@Drogon]~/devel/go/src%