NPE autocompleting class names #1818

arrdem · 2016-07-31T05:11:56Z

Bug encountered autocompleting class names, CIDER 0.14.0-SNAPSHOT (package: 20160727.904), emacs latest, Clojure 1.8.

  Show: Clojure Java REPL Tooling Duplicates All  (1 frames hidden)

  This is an unexpected CIDER middleware error.
  Please submit a bug report via `M-x cider-report-bug`.

  If these stacktraces are occuring frequently, consider using the
  button(s) below to suppress these types of errors for the duration of
  your current CIDER session. The stacktrace buffer will still be
  generated, but it will "pop under" your current buffer instead of
  "popping over". The button toggles this behavior.

 complete-error 

1. Unhandled java.lang.NullPointerException
   (No message)

           ns_mappings.clj:   87  cider.inlined-deps.compliment.v0v3v0.compliment.sources.ns-mappings/candidates/iter/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                   RT.java:  521  clojure.lang.RT/seq
                  core.clj:  137  clojure.core/seq
                  core.clj:  706  clojure.core/concat/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                   RT.java:  521  clojure.lang.RT/seq
                  core.clj:  137  clojure.core/seq
                  core.clj:  715  clojure.core/concat/cat/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                   RT.java:  521  clojure.lang.RT/seq
                  core.clj:  137  clojure.core/seq
                  core.clj: 3004  clojure.core/sort
                  core.clj: 3010  clojure.core/sort-by
                  core.clj: 3010  clojure.core/sort-by
                  core.clj:   88  cider.inlined-deps.compliment.v0v3v0.compliment.core/completions
                  core.clj:   54  cider.inlined-deps.compliment.v0v3v0.compliment.core/completions
              complete.clj:   18  cider.nrepl.middleware.complete/complete
              complete.clj:   10  cider.nrepl.middleware.complete/complete
              complete.clj:   28  cider.nrepl.middleware.complete/complete-reply
              complete.clj:   27  cider.nrepl.middleware.complete/complete-reply
        error_handling.clj:  146  cider.nrepl.middleware.util.error-handling/eval12806/fn
              MultiFn.java:  233  clojure.lang.MultiFn/invoke
              complete.clj:   37  cider.nrepl.middleware.complete/wrap-complete/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                   out.clj:   99  cider.nrepl.middleware.out/wrap-out/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                 debug.clj:  648  cider.nrepl.middleware.debug/wrap-debug/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
             enlighten.clj:   86  cider.nrepl.middleware.enlighten/wrap-enlighten/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
           macroexpand.clj:  208  cider.nrepl.middleware.macroexpand/wrap-macroexpand/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                 undef.clj:   22  cider.nrepl.middleware.undef/wrap-undef/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
           track_state.clj:  188  cider.nrepl.middleware.track-state/wrap-tracker/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               inspect.clj:   96  cider.nrepl.middleware.inspect/wrap-inspect/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                pprint.clj:  108  cider.nrepl.middleware.pprint/wrap-pprint/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
             pr_values.clj:   22  clojure.tools.nrepl.middleware.pr-values/pr-values/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                  test.clj:  286  cider.nrepl.middleware.test/wrap-test/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                pprint.clj:   50  cider.nrepl.middleware.pprint/wrap-pprint-fn/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               session.clj:  192  clojure.tools.nrepl.middleware.session/session/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                server.clj:   19  clojure.tools.nrepl.server/handle*
                server.clj:   16  clojure.tools.nrepl.server/handle*
                server.clj:   28  clojure.tools.nrepl.server/handle/fn
                  core.clj: 1938  clojure.core/binding-conveyor-fn/fn
                  AFn.java:   18  clojure.lang.AFn/call
           FutureTask.java:  266  java.util.concurrent.FutureTask/run
   ThreadPoolExecutor.java: 1142  java.util.concurrent.ThreadPoolExecutor/runWorker
   ThreadPoolExecutor.java:  617  java.util.concurrent.ThreadPoolExecutor$Worker/run
               Thread.java:  745  java.lang.Thread/run

The text was updated successfully, but these errors were encountered:

Malabarba · 2016-07-31T14:19:48Z

@alexander-yakushev

alexander-yakushev · 2016-07-31T16:15:15Z

@arrdem Does it happen for any classnames, or specific ones? Could you please give some leads?

arrdem · 2016-07-31T18:24:19Z

@alexander-yakushev this (or some other NPE) was encountered pretty routinely last night hacking on $PRIVATE_REPO. Lemme see if I can come up with a minimal failing example.

tirkarthi · 2016-08-03T05:55:18Z

@alexander-yakushev I am also facing the same issue with cider-nrepl version 0.14.0 and cider 0.14.0-snapshot. I have tested it with cider-nrepl version 0.13.0 and cider 0.14.0-snapshot I don't receive the error and completion.

hello-world.core> (defrecord Animal [name])    
hello-world.core.Animal
hello-world.core> (Animal. "hello")
#hello_world.core.Animal{:name "hello"}
hello-world.core> (Anim)

When I try to autocomplete with point at Anim by pressing TAB I receive the error as above.

alexander-yakushev · 2016-08-03T07:20:26Z

Thanks @tirkarthi! Indeed, completing classes produced by defrecord threw NPE because, as it turns out, such classes don't have a package. Perhaps, there are other cases like that too, which @arrdem ran into.

@bbatsov I'm deploying a fix as 0.3.1.

See clojure-emacs/cider#1818

arrdem · 2016-08-03T07:22:46Z

I'm gonna guess that I was encountering something else. Sorry I haven't put together a demo, work's been busy and I'm prepping a talk for Thursday. Will try to get to it tomorrow.

bbatsov · 2016-08-03T08:26:19Z

@alexander-yakushev OK, I'll update the dep.

qrthey · 2016-08-07T15:59:16Z

I think I encountered a related issue.

system-info

;; CIDER 0.13.0 (California), nREPL 0.2.12
;; Clojure 1.8.0, Java 1.8.0_102

Steps to reproduce:

create new leiningen project
define a new record in the 'core' file

  > (defrecord Person [name gender])

cider-jack-in
switch to the core files buffer, compile and switch to the projects namespace (C-c C-o, C-c C-k and C-c M-n)
switch to the repl

Typing the start of a keyword, triggering auto completion with company-mode, that isn't defined in the core namespace throws the error, e.g.

> :my

resulting error buffers content:

1. Unhandled java.lang.NullPointerException
   (No message)

           ns_mappings.clj:   87  cider.inlined-deps.compliment.v0v3v0.compliment.sources.ns-mappings/candidates/iter/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                   RT.java:  521  clojure.lang.RT/seq
                  core.clj:  137  clojure.core/seq
                  core.clj:  706  clojure.core/concat/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                   RT.java:  521  clojure.lang.RT/seq
                  core.clj:  137  clojure.core/seq
                  core.clj:  715  clojure.core/concat/cat/fn
              LazySeq.java:   40  clojure.lang.LazySeq/sval
              LazySeq.java:   49  clojure.lang.LazySeq/seq
                 Cons.java:   39  clojure.lang.Cons/next
                   RT.java: 1741  clojure.lang.RT/length
                   RT.java: 1682  clojure.lang.RT/seqToArray
              LazySeq.java:  130  clojure.lang.LazySeq/toArray
                   RT.java: 1655  clojure.lang.RT/toArray
                  core.clj:  344  clojure.core/to-array
                  core.clj: 3004  clojure.core/sort
                  core.clj: 3010  clojure.core/sort-by
                  core.clj: 3010  clojure.core/sort-by
                  core.clj:   88  cider.inlined-deps.compliment.v0v3v0.compliment.core/completions
                  core.clj:   54  cider.inlined-deps.compliment.v0v3v0.compliment.core/completions
              complete.clj:   18  cider.nrepl.middleware.complete/complete
              complete.clj:   10  cider.nrepl.middleware.complete/complete
              complete.clj:   28  cider.nrepl.middleware.complete/complete-reply
              complete.clj:   27  cider.nrepl.middleware.complete/complete-reply
        error_handling.clj:  146  cider.nrepl.middleware.util.error-handling/eval2951/fn
              MultiFn.java:  233  clojure.lang.MultiFn/invoke
              complete.clj:   37  cider.nrepl.middleware.complete/wrap-complete/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                 trace.clj:   36  cider.nrepl.middleware.trace/wrap-trace/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
           track_state.clj:  188  cider.nrepl.middleware.track-state/wrap-tracker/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                pprint.clj:  108  cider.nrepl.middleware.pprint/wrap-pprint/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
             pr_values.clj:   22  clojure.tools.nrepl.middleware.pr-values/pr-values/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                  test.clj:  286  cider.nrepl.middleware.test/wrap-test/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
              resource.clj:   27  cider.nrepl.middleware.resource/wrap-resource/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               apropos.clj:   91  cider.nrepl.middleware.apropos/wrap-apropos/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
             classpath.clj:   15  cider.nrepl.middleware.classpath/wrap-classpath/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               version.clj:   17  cider.nrepl.middleware.version/wrap-version/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               session.clj:  238  clojure.tools.nrepl.middleware.session/add-stdin/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
            stacktrace.clj:  174  cider.nrepl.middleware.stacktrace/wrap-stacktrace/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                pprint.clj:   50  cider.nrepl.middleware.pprint/wrap-pprint-fn/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
               session.clj:  192  clojure.tools.nrepl.middleware.session/session/fn
            middleware.clj:   22  clojure.tools.nrepl.middleware/wrap-conj-descriptor/fn
                server.clj:   19  clojure.tools.nrepl.server/handle*
                server.clj:   16  clojure.tools.nrepl.server/handle*
                server.clj:   28  clojure.tools.nrepl.server/handle/fn
                  core.clj: 1938  clojure.core/binding-conveyor-fn/fn
                  AFn.java:   18  clojure.lang.AFn/call
           FutureTask.java:  266  java.util.concurrent.FutureTask/run
   ThreadPoolExecutor.java: 1142  java.util.concurrent.ThreadPoolExecutor/runWorker
   ThreadPoolExecutor.java:  617  java.util.concurrent.ThreadPoolExecutor$Worker/run
               Thread.java:  745  java.lang.Thread/run

OlegTheCat · 2016-08-10T12:38:32Z

I can confirm issue reported by @qrthey.

bbatsov · 2016-08-21T07:24:28Z

Do you have this issue with 0.14-snapshot as well?

qrthey · 2016-08-21T18:44:42Z

Yes, same NullPointerException. This almost empty leiningen project reproduces the error (see comments for details).

qrthey · 2016-08-25T19:16:53Z

I just tried this after another melpa update of 0.14.0snapshot

(;; CIDER 0.14.0snapshot (package: 20160825.249), nREPL 0.2.12)

The middleware exception is no longer thrown.

alexander-yakushev · 2016-08-25T20:12:35Z

If CIDER 0.14.0-SNAPSHOT now uses Compliment 0.3.1, the defrecord problem should indeed be fixed. As for keyword error, I can't reproduce it on 0.14.0snapshot too, but I think I saw something similar before (but can't reproduce it now again).

bbatsov · 2016-09-27T06:05:07Z

OK, so should we close this or not?

bbatsov · 2016-10-09T07:58:23Z

I'm closing this for now. Feel free to reopen it if there still some issues (that can ideally be reliably reproduced).

qrthey · 2016-10-09T08:19:16Z

I haven't seen the issue occurring in a long time. Sorry for my late reply
and thanks for fixing this issue.

On Oct 9, 2016 09:58, "Bozhidar Batsov" notifications@github.com wrote:

I'm closing this for now. Feel free to reopen it if there still some
issues (that can ideally be reliably reproduced).

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You are receiving this because you were mentioned.
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alexander-yakushev added a commit to alexander-yakushev/compliment that referenced this issue Aug 3, 2016

[c.s.ns-mappings] Don't fail if a class doesn't have a package

205c789

See clojure-emacs/cider#1818

bbatsov closed this as completed Oct 9, 2016

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NPE autocompleting class names #1818

NPE autocompleting class names #1818

arrdem commented Jul 31, 2016

Malabarba commented Jul 31, 2016

alexander-yakushev commented Jul 31, 2016

arrdem commented Jul 31, 2016

tirkarthi commented Aug 3, 2016

alexander-yakushev commented Aug 3, 2016

arrdem commented Aug 3, 2016

bbatsov commented Aug 3, 2016

qrthey commented Aug 7, 2016 •

edited

OlegTheCat commented Aug 10, 2016

bbatsov commented Aug 21, 2016

qrthey commented Aug 21, 2016

qrthey commented Aug 25, 2016 •

edited

alexander-yakushev commented Aug 25, 2016

bbatsov commented Sep 27, 2016

bbatsov commented Oct 9, 2016

qrthey commented Oct 9, 2016

NPE autocompleting class names #1818

NPE autocompleting class names #1818

Comments

arrdem commented Jul 31, 2016

Malabarba commented Jul 31, 2016

alexander-yakushev commented Jul 31, 2016

arrdem commented Jul 31, 2016

tirkarthi commented Aug 3, 2016

alexander-yakushev commented Aug 3, 2016

arrdem commented Aug 3, 2016

bbatsov commented Aug 3, 2016

qrthey commented Aug 7, 2016 • edited

OlegTheCat commented Aug 10, 2016

bbatsov commented Aug 21, 2016

qrthey commented Aug 21, 2016

qrthey commented Aug 25, 2016 • edited

alexander-yakushev commented Aug 25, 2016

bbatsov commented Sep 27, 2016

bbatsov commented Oct 9, 2016

qrthey commented Oct 9, 2016

qrthey commented Aug 7, 2016 •

edited

qrthey commented Aug 25, 2016 •

edited