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[CLJ-1130] Invoking a static method with the wrong number of arguments results in a NoSuchFieldException, rather than a proper message that the arguments could not be matched to the method Created: 17/Dec/12  Updated: 06/Jan/13

Status: Open
Project: Clojure
Component/s: None
Affects Version/s: Release 1.4
Fix Version/s: None

Type: Defect Priority: Minor
Reporter: Howard Lewis Ship Assignee: Unassigned
Resolution: Unresolved Votes: 0
Labels: feedback


 Description   

My code inadventently invoked a method that expected a single parameter, but passed no parameters.

The exception:

Exception in thread "main" java.lang.NoSuchFieldException: getService, compiling:(com/annadaletech/nexus/services/registry.clj:168)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:6462)
	at clojure.lang.Compiler.analyze(Compiler.java:6262)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:6443)
	at clojure.lang.Compiler.analyze(Compiler.java:6262)
	at clojure.lang.Compiler.access$100(Compiler.java:37)
	at clojure.lang.Compiler$LetExpr$Parser.parse(Compiler.java:5883)
....
Caused by: java.lang.NoSuchFieldException: getService
	at java.lang.Class.getField(Class.java:1520)
	at clojure.lang.Compiler$StaticFieldExpr.<init>(Compiler.java:1180)
	at clojure.lang.Compiler$HostExpr$Parser.parse(Compiler.java:923)
	at clojure.lang.Compiler.analyzeSeq(Compiler.java:6455)
	... 78 more

That threw me for a bit; really, it looks like the compiler is attempting to access a field and invoke it as an IFn. However, a proper message would be "getService() requires 1 parameter, not 0" (or something to that effect). Even "invalid number of parameters for SmashRuntime/getService()" would be better.



 Comments   
Comment by Michael Drogalis [ 06/Jan/13 6:44 PM ]

It looks like it's first trying to resolve a field by name, since field access with / is legal. For example:

user=> (Integer/parseInt)
CompilerException java.lang.NoSuchFieldException: parseInt, compiling:(NO_SOURCE_PATH:1)

user=> (Integer/MAX_VALUE)
2147483647

Would trying to resolve a method before a field fix this?

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