Delve: Any project - nil pointer dereference (DwarfReader)

[kdeenanauth]

On any project (including simple hello world projects) I get the following exception:
```dlv debug
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x30 pc=0x626c2c]

goroutine 1 [running]:
panic(0x8d6380, 0xc04200c0b0)
C:/Go/src/runtime/panic.go:500 +0x1af
github.com/derekparker/delve/pkg/proc.(EvalScope).DwarfReader(0xc0429dd440, 0xc04202a800)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/variables.go:324 +0x2c
github.com/derekparker/delve/pkg/proc.(EvalScope).packageVarAddr(0xc0429dd440, 0x967909, 0x14, 0x1808440ea1, 0xc0423d8050, 0xbd27f8)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/variables.go:663 +0x3c
github.com/derekparker/delve/pkg/proc.(Process).EvalPackageVariable(0xc042191680, 0x967909, 0x14, 0x1, 0x0, 0x40, 0x0, 0x0, 0xc042207500, 0xc04202f620, ...)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/variables.go:654 +0x8b
github.com/derekparker/delve/pkg/proc.(Process).getGoInformation(0xc042191680, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc04201e000, 0xc042140320, 0xc042197eb8)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/proc.go:894 +0xc3
github.com/derekparker/delve/pkg/proc.initializeDebugProcess(0xc042191680, 0xc042199130, 0x4c, 0x0, 0xc04202a800, 0xc04202ab68, 0xc000000000)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/proc.go:834 +0xd7
github.com/derekparker/delve/pkg/proc.newDebugProcess(0xc042191680, 0xc042199130, 0x4c, 0x0, 0x0, 0xc0421996d0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/proc_windows.go:156 +0x352
github.com/derekparker/delve/pkg/proc.Launch(0xc04213e0f0, 0x1, 0x1, 0x959f75, 0x1, 0x0, 0x0, 0x0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/pkg/proc/proc_windows.go:118 +0x6e7
github.com/derekparker/delve/service/debugger.New(0xc04219e510, 0xc04219e510, 0xc0420739f0, 0x40f73f)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/service/debugger/debugger.go:69 +0x2be
github.com/derekparker/delve/service/rpccommon.(ServerImpl).Run(0xc042199090, 0xc042199000, 0xc042199090)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/service/rpccommon/server.go:117 +0x144
github.com/derekparker/delve/cmd/dlv/cmds.execute(0x0, 0xc04213e0f0, 0x1, 0x1, 0xc042138600, 0x1, 0x0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/cmd/dlv/cmds/commands.go:416 +0x1ed
github.com/derekparker/delve/cmd/dlv/cmds.debugCmd.func1(0xc042156a00, 0xbe4eb0, 0x0, 0x0, 0x0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/cmd/dlv/cmds/commands.go:243 +0x4ca
github.com/derekparker/delve/cmd/dlv/cmds.debugCmd(0xc042156a00, 0xbe4eb0, 0x0, 0x0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/cmd/dlv/cmds/commands.go:244 +0x50
github.com/derekparker/delve/vendor/github.com/spf13/cobra.(Command).execute(0xc042156a00, 0xbe4eb0, 0x0, 0x0, 0xc042156a00, 0xbe4eb0)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/vendor/github.com/spf13/cobra/command.go:569 +0x418
github.com/derekparker/delve/vendor/github.com/spf13/cobra.(Command).ExecuteC(0xc042156400, 0xc042156a00, 0xc042156800, 0xc042156600)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/vendor/github.com/spf13/cobra/command.go:656 +0x36e
github.com/derekparker/delve/vendor/github.com/spf13/cobra.(Command).Execute(0xc042156400, 0xc042073f70, 0xc04201e000)
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/vendor/github.com/spf13/cobra/command.go:615 +0x32
main.main()
C:/Users/kdeenanauth/Documents/git/go/src/github.com/derekparker/delve/cmd/dlv/main.go:13 +0x5c```

1. What version of Delve are you using (dlv version)? 0.12.1
2. What version of Go are you using? (go version)? 1.7.5
3. What operating system and processor architecture are you using? windows/amd64
4. What did you do? dlv debug

[kdeenanauth]

Got bit living on the edge - switching to the tag v0.12.1 fixed it.

[aarzilli]

Got bit living on the edge

That might be, but this is still a bug.

[BadPirate]

Should be re-opened, bug is still present -- Using an older stable build is not a "Fix" :)

[aarzilli]

This bug was on windows and it was fixed, if you are seeing something like this on macOS then it's a different problem and you should post your stacktrace.

[aarzilli]

Never mind, your bug is #732.