On Dec 7, 9:39 pm, David Nolen <dnolen.li...@gmail.com> wrote:
> http://github.com/jochu/swank-clojure/blob/master/src/main/clojure/sw...
>
> Is the offending line.
It's really hard to reason about it in clojure source code. I see, in
jswat debbuger, the root cause of NPE appears around byte code
(putfield ...) for a mutual recursive letfn form.
Here is a simple way to reproduce it. I did it this time with latest
master branch. Can anybody else reproduce it on different OS/JVM
version?
(ns test.letfn)
(defn debug [n]
(letfn [(even [n]
(if (== n 0)
true
(odd (- n 1))))
(odd [n]
(if (== n 0)
false
(even (- n 1))))]
(odd n)))
Listening for transport dt_socket at address: 6666
Clojure 1.1.0-master-SNAPSHOT
user=> (require 'test.letfn)
nil
user=> (test.letfn/debug 5)
java.lang.NullPointerException (NO_SOURCE_FILE:0)
user=> (.. *e getCause printStackTrace)
java.lang.NullPointerException
at test.letfn$debug__17.invoke(letfn.clj:3)
at user$eval__4.invoke(NO_SOURCE_FILE:2)
at clojure.lang.Compiler.eval(Compiler.java:4642)
at clojure.core$eval__5254.invoke(core.clj:2035)
at clojure.main$repl__7403$read_eval_print__7415.invoke
(main.clj:183)
at clojure.main$repl__7403.doInvoke(main.clj:200)
at clojure.lang.RestFn.invoke(RestFn.java:426)
at clojure.main$repl_opt__7449.invoke(main.clj:254)
at clojure.main$main__7484.doInvoke(main.clj:341)
at clojure.lang.RestFn.invoke(RestFn.java:402)
at clojure.lang.Var.invoke(Var.java:355)
at clojure.lang.AFn.applyToHelper(AFn.java:171)
at clojure.lang.Var.applyTo(Var.java:476)
at clojure.main.main(main.java:37)
nil
user=>
macbook-wifi:/ fenghou$ uname -a
Darwin macbook-wifi 8.11.1 Darwin Kernel Version 8.11.1: Wed Oct 10
18:23:28 PDT 2007; root:xnu-792.25.20~1/RELEASE_I386 i386 i386
macbook-wifi:/ fenghou$ java -version
java version "1.5.0_19"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_19-
b02-306)
Java HotSpot(TM) Client VM (build 1.5.0_19-138, mixed mode, sharing)
- Feng
> On Mon, Dec 7, 2009 at 9:34 PM, David Nolen <dnolen.li...@gmail.com> wrote:
> > Looking at the stacktrace it looks like this is because of swank_fuzzy.clj.
> > I can start up the SLIME Repl no problem, I see your exact same stack trace
> > only if I try to trigger fuzzy completion via C-c TAB.
>
> > David
>
> > On Mon, Dec 7, 2009 at 9:24 PM, Feng <hou...@gmail.com> wrote:
>
> >> On Dec 7, 8:57 pm, David Nolen <dnolen.li...@gmail.com> wrote:
> >> > I was getting this as well, but this was before the last 3 commits to
> >> new.
> >> > Did you wipe your old jars and class files and start afresh?
>
> >> Yes, just to make sure not waste Rich's time. I did doubt and triple
> >> checks, ant clean, find $HOME -name clojure\*.jar |xargs rm ...
>
> >> I use Jeff's git master clone, not Phil's branch. No magic in emacs. I
> >> load everything (clojure-*.jar, swank-clojure/src) in clojure.sh. And
> >> always start swank from console repl in screen, then M-x slime-
> >> connect. So I'm pretty sure where everything is.
>
> >> > David
>
> >> > On Mon, Dec 7, 2009 at 8:31 PM, Feng <hou...@gmail.com> wrote:
> >> > > Hi,
>
> >> > > After git pull on new branch
>
> >> > > commit 1da63ad10d2531264e86eb705a10b3cebc9b1067
> >> > > Author: Rich Hickey <richhic...@gmail.com>
> >> > > Date: Mon Dec 7 16:44:41 2009 -0500
>
> >> > > init CLEAR_SITES
>
> >> > > Got NPE in slime
>
> >> > > java.lang.RuntimeException: java.lang.RuntimeException:
> >> > > java.lang.RuntimeException: java.lang.RuntimeException:
> >> > > java.lang.NullPointerException
> >> > > [Thrown class java.lang.RuntimeException]
>
> >> > > Backtrace:
> >> > > 0: clojure.lang.LazySeq.sval(LazySeq.java:47)
> >> > > 1: clojure.lang.LazySeq.seq(LazySeq.java:56)
> >> > > 2: clojure.lang.RT.seq(RT.java:440)
> >> > > 3: clojure.core$seq__3970.invoke(core.clj:105)
> >> > > 4: clojure.core$sort__4671.invoke(core.clj:1994)
> >> > > 5: swank.commands.contrib.swank_fuzzy
> >> > > $fuzzy_generate_matchings__1781.invoke(swank_fuzzy.clj:256)
> >> > > 6: swank.commands.contrib.swank_fuzzy
> >> > > $fuzzy_completion_set__1838$fn__1840.invoke(swank_fuzzy.clj:310)
> >> > > 7: swank.commands.contrib.swank_fuzzy$call_with_timeout__1703.invoke
> >> > > (swank_fuzzy.clj:127)
> >> > > 8: swank.commands.contrib.swank_fuzzy
> >> > > $fuzzy_completion_set__1838.invoke(swank_fuzzy.clj:309)
> >> > > 9: swank.commands.contrib.swank_fuzzy
> >> > > $eval__1849$fuzzy_completions__1851.invoke(swank_fuzzy.clj:323)
> >> > > 10: clojure.lang.Var.invoke(Var.java:385)
> >> > > 11: user$eval__2042.invoke(NO_SOURCE_FILE)
> >> > > 12: clojure.lang.Compiler.eval(Compiler.java:5256)
> >> > > 13: clojure.lang.Compiler.eval(Compiler.java:5224)
> >> > > 14: clojure.core$eval__4688.invoke(core.clj:2036)
> >> > > 15: swank.core$eval_in_emacs_package__399.invoke(core.clj:58)
> >> > > 16: swank.core$eval_for_emacs__468.invoke(core.clj:126)
> >> > > 17: clojure.lang.Var.invoke(Var.java:373)
> >> > > 18: clojure.lang.AFn.applyToHelper(AFn.java:182)
> >> > > 19: clojure.lang.Var.applyTo(Var.java:482)
> >> > > 20: clojure.core$apply__4058.invoke(core.clj:437)
> >> > > 21: swank.core$eval_from_control__401.invoke(core.clj:65)
> >> > > 22: swank.core$eval_loop__403.invoke(core.clj:70)
> >> > > 23:
> >> swank.core$spawn_repl_thread__526$fn__557$fn__559.invoke(core.clj:
> >> > > 179)
> >> > > 24: clojure.lang.AFn.applyToHelper(AFn.java:172)
> >> > > 25: clojure.lang.AFn.applyTo(AFn.java:164)
> >> > > 26: clojure.core$apply__4058.invoke(core.clj:437)
> >> > > 27: swank.core$spawn_repl_thread__526$fn__557.doInvoke(core.clj:176)
> >> > > 28: clojure.lang.RestFn.invoke(RestFn.java:398)
> >> > > 29: clojure.lang.AFn.run(AFn.java:37)
> >> > > 30: java.lang.Thread.run(Thread.java:613)
>
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