Whenever I do a defprotocol in the clojurescript repl, even a trivial one like
(defprotocol IFoo
(foo [this]))
it fails with an error `Can't change/establish root binding of: *unchecked-if*
with set at line 1 <cljs repl>'. Everything else seems to work as expected.
When compiled outside the repl, such as in a running project, defprotocol works
fine.
This happens even in the bare bones cljs repl from following the Quickstart
recipe on the cljs wiki exactly, using the latest cljs.jar. The complete
stacktrace is below for reference.
This seems like a repl bug, but I'm open to other possibilities. Any thoughts
would be appreciated.
cljs.user=> (defprotocol IFoo (foo [this]))
clojure.lang.ExceptionInfo: Can't change/establish root binding of:
*unchecked-if* with set at line 1 <cljs repl> {:file "<cljs repl>", :line 1,
:column 1, :tag :cljs/analysis-error}
at clojure.core$ex_info.invokeStatic(core.clj:4617)
at cljs.analyzer$error.invokeStatic(analyzer.cljc:576)
at cljs.analyzer$analyze_seq_STAR__wrap.invokeStatic(analyzer.cljc:2420)
at cljs.analyzer$analyze_seq.invokeStatic(analyzer.cljc:2441)
at cljs.analyzer$analyze_form.invokeStatic(analyzer.cljc:2555)
at cljs.analyzer$analyze_STAR_.invokeStatic(analyzer.cljc:2600)
at cljs.analyzer$analyze.invokeStatic(analyzer.cljc:2617)
at cljs.analyzer$analyze.invoke(analyzer.cljc:2605)
at cljs.analyzer$analyze.invokeStatic(analyzer.cljc:2613)
at cljs.analyzer$analyze.invoke(analyzer.cljc:2605)
at cljs.analyzer$analyze.invokeStatic(analyzer.cljc:2612)
at cljs.analyzer$analyze.invoke(analyzer.cljc:2605)
at
cljs.analyzer$analyze_do_statements_STAR_$fn__1249.invoke(analyzer.cljc:1406)
at clojure.core$map$fn__4785.invoke(core.clj:2644)
at clojure.lang.LazySeq.sval(LazySeq.java:40)
at clojure.lang.LazySeq.seq(LazySeq.java:49)
at clojure.lang.RT.seq(RT.java:521)
at clojure.core$seq__4357.invokeStatic(core.clj:137)
at
cljs.analyzer$analyze_do_statements_STAR_.invokeStatic(analyzer.cljc:1405)
at cljs.analyzer$analyze_do_statements.invokeStatic(analyzer.cljc:1408)
at cljs.analyzer$fn__1254.invokeStatic(analyzer.cljc:1411)
at cljs.analyzer$fn__1254.invoke(analyzer.cljc:1411)
at clojure.lang.MultiFn.invoke(MultiFn.java:251)
at cljs.analyzer$analyze_seq_STAR_.invokeStatic(analyzer.cljc:2416)
at cljs.analyzer$analyze_seq_STAR__wrap.invokeStatic(analyzer.cljc:2419)
at cljs.analyzer$analyze_seq.invokeStatic(analyzer.cljc:2441)
at cljs.analyzer$analyze_form.invokeStatic(analyzer.cljc:2555)
at cljs.analyzer$analyze_STAR_.invokeStatic(analyzer.cljc:2600)
at cljs.analyzer$analyze.invokeStatic(analyzer.cljc:2617)
at cljs.analyzer$analyze.invoke(analyzer.cljc:2605)
at cljs.analyzer$analyze_seq.invokeStatic(analyzer.cljc:2443)
at cljs.analyzer$analyze_form.invokeStatic(analyzer.cljc:2555)
at cljs.analyzer$analyze_STAR_.invokeStatic(analyzer.cljc:2600)
at cljs.analyzer$analyze.invokeStatic(analyzer.cljc:2617)
at cljs.repl$evaluate_form.invokeStatic(repl.cljc:440)
at cljs.repl$eval_cljs.invokeStatic(repl.cljc:576)
at cljs.repl$eval_cljs.invoke(repl.cljc:563)
at cljs.repl$repl_STAR_$read_eval_print__4908.invoke(repl.cljc:875)
at cljs.repl$repl_STAR_$fn__4914$fn__4923.invoke(repl.cljc:914)
at cljs.repl$repl_STAR_$fn__4914.invoke(repl.cljc:913)
at cljs.compiler$with_core_cljs.invokeStatic(compiler.cljc:1154)
at cljs.repl$repl_STAR_.invokeStatic(repl.cljc:851)
at cljs.repl$repl.invokeStatic(repl.cljc:993)
at cljs.repl$repl.doInvoke(repl.cljc:925)
at clojure.lang.RestFn.invoke(RestFn.java:486)
at user$eval220.invokeStatic(repl.clj:10)
at user$eval220.invoke(repl.clj:10)
at clojure.lang.Compiler.eval(Compiler.java:6927)
at clojure.lang.Compiler.load(Compiler.java:7379)
at clojure.lang.Compiler.loadFile(Compiler.java:7317)
at clojure.main$load_script.invokeStatic(main.clj:275)
at clojure.main$script_opt.invokeStatic(main.clj:335)
at clojure.main$script_opt.invoke(main.clj:330)
at clojure.main$main.invokeStatic(main.clj:421)
at clojure.main$main.doInvoke(main.clj:384)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.lang.Var.invoke(Var.java:379)
at clojure.lang.AFn.applyToHelper(AFn.java:154)
at clojure.lang.Var.applyTo(Var.java:700)
at clojure.main.main(main.java:37)
Caused by: java.lang.IllegalStateException: Can't change/establish root binding
of: *unchecked-if* with set
at clojure.lang.Var.set(Var.java:221)
at cljs.analyzer$fn__1299.invokeStatic(analyzer.cljc:1589)
at cljs.analyzer$fn__1299.invoke(analyzer.cljc:1578)
at clojure.lang.MultiFn.invoke(MultiFn.java:251)
at cljs.analyzer$analyze_seq_STAR_.invokeStatic(analyzer.cljc:2416)
at cljs.analyzer$analyze_seq_STAR__wrap.invokeStatic(analyzer.cljc:2419)
... 57 more
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