[ 
https://issues.apache.org/jira/browse/GROOVY-10312?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Marcin Zajaczkowski updated GROOVY-10312:
-----------------------------------------
    Description: 
After switch from 3.0.8 to 3.0.9 Groovy throws at runtime 
MissingMethodException for static method in a trait called from another trait, 
but only if a given method has a default parameter.

A stripped down code to reproduce problem:
{code:java}
class StaticStaticInTraitProblem implements TLevel1 {
    static void main(String[] args) {
        staticMethodWithDefaultParameter()
    }
}

trait TLevel1 extends TLevel2 {
    static void staticMethodWithDefaultParameter(String params = "") { 
//default param is required to make it fail at runtime
        static2() //fails with MissingMethodException: No signature of method: 
static foobar.TLevel1.static2() is applicable ...
    }
}

trait TLevel2 {
    static void static2() {}
}{code}
A stacktrace:
{code:java}
Exception in thread "main" groovy.lang.MissingMethodException: No signature of 
method: static foobar.TLevel1.static2() is applicable for argument types: () 
values: []
Possible solutions: wait(), wait(long), split(groovy.lang.Closure), wait(long, 
int), notify(), stream()
    at 
groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1584)
    at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
    at 
org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:1003)
    at 
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
    at 
foobar.TLevel1$Trait$Helper.$static_methodMissing(StaticStaticInTraitProblem2Spec.groovy)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
    at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
    at 
groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1582)
    at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:50)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:130)
    at 
foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy:11)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
    at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:323)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:44)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:100)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:55)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:217)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:240)
    at 
foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
    at 
foobar.TLevel1$Trait$Helper$staticMethodWithDefaultParameter.call(Unknown 
Source)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:139)
    at 
foobar.StaticStaticInTraitProblem2Spec.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
    at 
foobar.StaticStaticInTraitProblem2Spec.main(StaticStaticInTraitProblem2Spec.groovy:5)
 
 {code}
Trying to minimize the original case, I reach similar error also with the other 
construction:
{code:java}
class StaticInTraitProblem implements StaticTrait {
    static void main(String[] args) {
        staticMethodWithDefaultParameter()
    }
}

trait StaticTrait {
    public static final String CONSTANT = ""
    static void staticMethodWithDefaultParameter(String params = "") {  
//default param is required to make it fail at runtime
        CONSTANT  //Fails with: MissingMethodException: No signature of method: 
static foobar.StaticTrait.foobar_StaticTrait__CONSTANT$get() is applicable for 
argument types: () values: []
    }
}  {code}
It worked fine with 3.0.8.

  was:
After switch from 3.0.8 to 3.0.9 Groovy throws at runtime 
MissingMethodException for static method in a trait called from another trait, 
but only if a given method has default parameter.

A stripped down code to reproduce problem:
{code:java}
class StaticStaticInTraitProblem implements TLevel1 {
    static void main(String[] args) {
        staticMethodWithDefaultParameter()
    }
}

trait TLevel1 extends TLevel2 {
    static void staticMethodWithDefaultParameter(String params = "") { 
//default param is required to make it fail at runtime
        static2() //fails with MissingMethodException: No signature of method: 
static foobar.TLevel1.static2() is applicable ...
    }
}

trait TLevel2 {
    static void static2() {}
}{code}
A stacktrace:
{code:java}
Exception in thread "main" groovy.lang.MissingMethodException: No signature of 
method: static foobar.TLevel1.static2() is applicable for argument types: () 
values: []
Possible solutions: wait(), wait(long), split(groovy.lang.Closure), wait(long, 
int), notify(), stream()
    at 
groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1584)
    at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
    at 
org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:1003)
    at 
org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
    at 
foobar.TLevel1$Trait$Helper.$static_methodMissing(StaticStaticInTraitProblem2Spec.groovy)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
    at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
    at 
groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1582)
    at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:50)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:130)
    at 
foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy:11)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
Method)
    at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
    at 
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:323)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:44)
    at 
org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:100)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:55)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:217)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:240)
    at 
foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
    at 
foobar.TLevel1$Trait$Helper$staticMethodWithDefaultParameter.call(Unknown 
Source)
    at 
org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
    at 
org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:139)
    at 
foobar.StaticStaticInTraitProblem2Spec.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
    at 
foobar.StaticStaticInTraitProblem2Spec.main(StaticStaticInTraitProblem2Spec.groovy:5)
 
 {code}
Trying to minimize the original case, I reach similar error also with the other 
construction:
{code:java}
class StaticInTraitProblem implements StaticTrait {
    static void main(String[] args) {
        staticMethodWithDefaultParameter()
    }
}

trait StaticTrait {
    public static final String CONSTANT = ""
    static void staticMethodWithDefaultParameter(String params = "") {  
//default param is required to make it fail at runtime
        CONSTANT  //Fails with: MissingMethodException: No signature of method: 
static foobar.StaticTrait.foobar_StaticTrait__CONSTANT$get() is applicable for 
argument types: () values: []
    }
}  {code}
It worked fine with 3.0.8.


> MissingMethodException in method with default parameter in trait - regression 
> in 3.0.9
> --------------------------------------------------------------------------------------
>
>                 Key: GROOVY-10312
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10312
>             Project: Groovy
>          Issue Type: Improvement
>    Affects Versions: 3.0.9
>            Reporter: Marcin Zajaczkowski
>            Priority: Minor
>
> After switch from 3.0.8 to 3.0.9 Groovy throws at runtime 
> MissingMethodException for static method in a trait called from another 
> trait, but only if a given method has a default parameter.
> A stripped down code to reproduce problem:
> {code:java}
> class StaticStaticInTraitProblem implements TLevel1 {
>     static void main(String[] args) {
>         staticMethodWithDefaultParameter()
>     }
> }
> trait TLevel1 extends TLevel2 {
>     static void staticMethodWithDefaultParameter(String params = "") { 
> //default param is required to make it fail at runtime
>         static2() //fails with MissingMethodException: No signature of 
> method: static foobar.TLevel1.static2() is applicable ...
>     }
> }
> trait TLevel2 {
>     static void static2() {}
> }{code}
> A stacktrace:
> {code:java}
> Exception in thread "main" groovy.lang.MissingMethodException: No signature 
> of method: static foobar.TLevel1.static2() is applicable for argument types: 
> () values: []
> Possible solutions: wait(), wait(long), split(groovy.lang.Closure), 
> wait(long, int), notify(), stream()
>     at 
> groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1584)
>     at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
>     at 
> org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:1003)
>     at 
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
>     at 
> foobar.TLevel1$Trait$Helper.$static_methodMissing(StaticStaticInTraitProblem2Spec.groovy)
>     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
> Method)
>     at 
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
>     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.base/java.lang.reflect.Method.invoke(Method.java:567)
>     at 
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
>     at 
> groovy.lang.MetaClassImpl.invokeStaticMissingMethod(MetaClassImpl.java:1582)
>     at groovy.lang.MetaClassImpl.invokeStaticMethod(MetaClassImpl.java:1570)
>     at 
> org.codehaus.groovy.runtime.callsite.StaticMetaClassSite.call(StaticMetaClassSite.java:50)
>     at 
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:130)
>     at 
> foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy:11)
>     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native 
> Method)
>     at 
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78)
>     at 
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>     at java.base/java.lang.reflect.Method.invoke(Method.java:567)
>     at 
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:107)
>     at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:323)
>     at 
> org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:44)
>     at 
> org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:100)
>     at 
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:55)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:217)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:240)
>     at 
> foobar.TLevel1$Trait$Helper.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
>     at 
> foobar.TLevel1$Trait$Helper$staticMethodWithDefaultParameter.call(Unknown 
> Source)
>     at 
> org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
>     at 
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:139)
>     at 
> foobar.StaticStaticInTraitProblem2Spec.staticMethodWithDefaultParameter(StaticStaticInTraitProblem2Spec.groovy)
>     at 
> foobar.StaticStaticInTraitProblem2Spec.main(StaticStaticInTraitProblem2Spec.groovy:5)
>  
>  {code}
> Trying to minimize the original case, I reach similar error also with the 
> other construction:
> {code:java}
> class StaticInTraitProblem implements StaticTrait {
>     static void main(String[] args) {
>         staticMethodWithDefaultParameter()
>     }
> }
> trait StaticTrait {
>     public static final String CONSTANT = ""
>     static void staticMethodWithDefaultParameter(String params = "") {  
> //default param is required to make it fail at runtime
>         CONSTANT  //Fails with: MissingMethodException: No signature of 
> method: static foobar.StaticTrait.foobar_StaticTrait__CONSTANT$get() is 
> applicable for argument types: () values: []
>     }
> }  {code}
> It worked fine with 3.0.8.



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