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

[kevinbowrin]

Not sure if you're using this as the main bug reporting tool, but I got this when looking at the 'next block' on the most-recent block:

  /usr/local/go/src/pkg/runtime/panic.c:482 (0x42005d)
    panicstring: runtime·panic(err);
/usr/local/go/src/pkg/runtime/os_linux.c:234 (0x41eefa)
    sigpanic: runtime·panicstring("invalid memory address or nil pointer dereference");
/home/thomas/go3/src/btcplex/models.go:162 (0x4ed900)
/home/thomas/go3/src/btcplex-server/btcplex-server.go:335 (0x4064f2)
/usr/local/go/src/pkg/runtime/asm_amd64.s:339 (0x430252)
    call32: CALLFN(call32, 32)
/usr/local/go/src/pkg/reflect/value.go:474 (0x500f9b)
    Value.call: call(fn, ptr, uint32(size))
/usr/local/go/src/pkg/reflect/value.go:345 (0x50008d)
    Value.Call: return v.call("Call", in)
/home/thomas/go3/src/github.com/codegangsta/inject/inject.go:102 (0x5b0634)
    (*injector).Invoke: return reflect.ValueOf(f).Call(in), nil
/home/thomas/go3/src/github.com/codegangsta/martini/env.go:1 (0x4c9e9c)
    (*context).Invoke: package martini
/home/thomas/go3/src/github.com/codegangsta/martini/router.go:286 (0x4c7c24)
    (*routeContext).run: vals, err := r.Invoke(handler)
/home/thomas/go3/src/github.com/codegangsta/martini/router.go:185 (0x4c7214)
    (*route).Handle: context.run()
/home/thomas/go3/src/github.com/codegangsta/martini/router.go:89 (0x4c668e)
    (*router).Handle: route.Handle(context, res)
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:107 (0x4c8450)
    Router.Handle.fm: m.Action(r.Handle)
/usr/local/go/src/pkg/runtime/asm_amd64.s:340 (0x4302b2)
    call64: CALLFN(call64, 64)
/usr/local/go/src/pkg/reflect/value.go:474 (0x500f9b)
    Value.call: call(fn, ptr, uint32(size))
/usr/local/go/src/pkg/reflect/value.go:345 (0x50008d)
    Value.Call: return v.call("Call", in)
/home/thomas/go3/src/github.com/codegangsta/inject/inject.go:102 (0x5b0634)
    (*injector).Invoke: return reflect.ValueOf(f).Call(in), nil
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:161 (0x4c4e02)
    (*context).run: _, err := c.Invoke(c.handler())
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:152 (0x4c4d5b)
    (*context).Next: c.run()
/home/thomas/go3/src/github.com/codegangsta/martini/recovery.go:140 (0x4c8976)
    func.004: c.Next()
/usr/local/go/src/pkg/runtime/asm_amd64.s:339 (0x430252)
    call32: CALLFN(call32, 32)
/usr/local/go/src/pkg/reflect/value.go:474 (0x500f9b)
    Value.call: call(fn, ptr, uint32(size))
/usr/local/go/src/pkg/reflect/value.go:345 (0x50008d)
    Value.Call: return v.call("Call", in)
/home/thomas/go3/src/github.com/codegangsta/inject/inject.go:102 (0x5b0634)
    (*injector).Invoke: return reflect.ValueOf(f).Call(in), nil
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:161 (0x4c4e02)
    (*context).run: _, err := c.Invoke(c.handler())
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:152 (0x4c4d5b)
    (*context).Next: c.run()
/home/thomas/go3/src/github.com/codegangsta/martini/logger.go:16 (0x4c8218)
    func.001: c.Next()
/usr/local/go/src/pkg/runtime/asm_amd64.s:340 (0x4302b2)
    call64: CALLFN(call64, 64)
/usr/local/go/src/pkg/reflect/value.go:474 (0x500f9b)
    Value.call: call(fn, ptr, uint32(size))
/usr/local/go/src/pkg/reflect/value.go:345 (0x50008d)
    Value.Call: return v.call("Call", in)
/home/thomas/go3/src/github.com/codegangsta/inject/inject.go:102 (0x5b0634)
    (*injector).Invoke: return reflect.ValueOf(f).Call(in), nil
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:161 (0x4c4e02)
    (*context).run: _, err := c.Invoke(c.handler())
/home/thomas/go3/src/github.com/codegangsta/martini/martini.go:69 (0x4c4283)
    (*Martini).ServeHTTP: m.createContext(res, req).run()
/usr/local/go/src/pkg/net/http/server.go:1597 (0x489e9e)
    serverHandler.ServeHTTP: handler.ServeHTTP(rw, req)
/usr/local/go/src/pkg/net/http/server.go:1167 (0x487ea7)
    (*conn).serve: serverHandler{c.server}.ServeHTTP(w, w.req)
/usr/local/go/src/pkg/runtime/proc.c:1394 (0x423ab0)
    goexit: runtime·goexit(void)    

[tsileo]

Thanks for the report, and yes, GitHub is the main bug reporting tool.

It happens because the next field of the most recent block (which will become the second to last) is updated few seconds before the new processed block become available.

I'll fix this soon, thanks!

Thanks!