We should never throw a VerifyError, so that is a bug. But you probably
don't want to use "this" in a static context. You probably just want
$q.metaClass or ${getMetaClass()}.
Cheers, Paul.
On Fri, Jun 5, 2020 at 9:33 PM OCsite <o...@ocs.cz> wrote:
> And another thing which I don't understand and seems highly suspicious —
> do I just miss something of importance, or is it a bug?
>
> ===
> 127 ocs */tmp>* <q.groovy
> class q {
> static main(av) {
> println "my MC is $this.metaClass"
> }
> }
> 128 ocs */tmp>* /usr/local/groovy-3.0.4/bin/groovy q
> Caught: java.lang.VerifyError: Bad type on operand stack
> Exception Details:
> Location:
> q.main([Ljava/lang/String;)V @21: getfield
> Reason:
> Type '[Ljava/lang/String;' (current frame, stack[7]) is not assignable
> to 'q'
> Current Frame:
> bci: @21
> flags: { }
> locals: { '[Ljava/lang/String;',
> '[Lorg/codehaus/groovy/runtime/callsite/CallSite;' }
> stack: { 'org/codehaus/groovy/runtime/callsite/CallSite',
> 'java/lang/Class', uninitialized 10, uninitialized 10,
> '[Ljava/lang/Object;', '[Ljava/lang/Object;', integer,
> '[Ljava/lang/String;' }
> Bytecode:
> 0000000: b800 144c 2b12 2132 1202 bb00 2359 04bd
> 0000010: 0004 5903 2ab4 001c 5305 bd00 2559 0312
> 0000020: 2753 5904 1229 53b7 002c b900 3203 0057
> 0000030: b1
>
> java.lang.VerifyError: Bad type on operand stack
> Exception Details:
> Location:
> q.main([Ljava/lang/String;)V @21: getfield
> Reason:
> Type '[Ljava/lang/String;' (current frame, stack[7]) is not assignable
> to 'q'
> Current Frame:
> bci: @21
> flags: { }
> locals: { '[Ljava/lang/String;',
> '[Lorg/codehaus/groovy/runtime/callsite/CallSite;' }
> stack: { 'org/codehaus/groovy/runtime/callsite/CallSite',
> 'java/lang/Class', uninitialized 10, uninitialized 10,
> '[Ljava/lang/Object;', '[Ljava/lang/Object;', integer,
> '[Ljava/lang/String;' }
> Bytecode:
> 0000000: b800 144c 2b12 2132 1202 bb00 2359 04bd
> 0000010: 0004 5903 2ab4 001c 5305 bd00 2559 0312
> 0000020: 2753 5904 1229 53b7 002c b900 3203 0057
> 0000030: b1
>
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 129 ocs */tmp>*
> ===
>
> On 27 May 2020, at 23:42, o...@ocs.cz wrote:
>
> 484 ocs /tmp> <q.groovy
> class q {
> static main(av) {
> new Foo().test()
> }
> }
> class Foo extends Root { }
> class Root {
> private _objects=[]
> void test() {
> println "this is OK"
> _objects<<'hi'
> println "this crashes"
> 1.times { _objects<<it }
> }
> }
> 485 ocs /tmp> /usr/local/groovy-3.0.4/bin/groovy q
> this is OK
> this crashes
> Caught: groovy.lang.MissingPropertyException: No such property: _objects
> for class: Foo
> groovy.lang.MissingPropertyException: No such property: _objects for
> class: Foo
> at Root$_test_closure1.doCall(q.groovy:13)
> at Root.test(q.groovy:13)
> at Root$test.call(Unknown Source)
> at q.main(q.groovy:3)
> 486 ocs /tmp>
>
>
>
