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https://issues.apache.org/jira/browse/GROOVY-11359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17837450#comment-17837450
]
Eric Milles commented on GROOVY-11359:
--------------------------------------
If I am reading correctly, your transform is creating a method via the
following sequence:
{code:groovy}
String methodName = methodNode.name + '_'
ClassNode retClassNode =
GenericsUtils.makeClassSafeWithGenerics(GetMethodReturn, methodNode.returnType)
ReturnStatement code = new ReturnStatement(
new CastExpression(retClassNode,
new ConstructorCallExpression(
retClassNode,
new ArgumentListExpression([
new StaticMethodCallExpression(
classNode,
"getMethod",
new
ArgumentListExpression(
[new
ConstantExpression(methodNode.name)] as List<Expression>
)),
new MethodCallExpression(
new
VariableExpression('this'),
methodNode.name,
[] as
ArgumentListExpression),
] as List<Expression>)
)
)
)
// cast something
new MethodNode(
methodName,
MethodNode.ACC_PUBLIC,
GenericsUtils.makeClassSafeWithGenerics(GetMethodReturn,
transformNativeTypeIntoClass(methodNode.returnType)),
[] as Parameter[],
[] as ClassNode[],
code
)
{code}
Classgen is processing the CastExpression when it finds that the operand stack
is empty. The cast is the expression of the method's ReturnStatement. The
operand stack underflow occurrs somewhere in you ConstructorCallExpression.
One thing to try that is a common source of problems is capturing your
MethodCallExpression and calling {{setImplicitThis(false)}} on it.
You can also set the return type of your method node to {{retClassNode}}
instead of {{makeClassSafeWithGenerics(GetMethodReturn...}}
And I don't know if it helps to set the type of the StaticMethodCallExpression
to String. You could step through the class generator and see what is on the
operand stack as it works its way through the CCE.
> ASTTransformation cause "General error during instruction selection"
> --------------------------------------------------------------------
>
> Key: GROOVY-11359
> URL: https://issues.apache.org/jira/browse/GROOVY-11359
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 3.0.21
> Environment: $ java -fullversion
> openjdk full version "17.0.10+7"
> $ uname -a
> Linux auoHome 6.6.26-1-MANJARO #1 SMP PREEMPT_DYNAMIC Wed Apr 10 20:11:08 UTC
> 2024 x86_64 GNU/Linux
> Reporter: Adrien Guichard
> Priority: Major
> Fix For: 3.0.11
>
> Attachments: testcase-asttransform-ko.tar.gz
>
>
> When assembling the *Grails* project, I do obtain the following stacktrace:
> java.lang.ArrayIndexOutOfBoundsException: size==0
> at
> org.codehaus.groovy.classgen.asm.OperandStack.ensureStackNotEmpty(OperandStack.java:279)
> at
> org.codehaus.groovy.classgen.asm.OperandStack.replace(OperandStack.java:271)
> at
> org.codehaus.groovy.classgen.AsmClassGenerator.visitCastExpression(AsmClassGenerator.java:815)
> at org.codehaus.groovy.ast.expr.CastExpression.visit(CastExpression.java:90)
> at
> org.codehaus.groovy.classgen.asm.StatementWriter.writeReturn(StatementWriter.java:615)
> [. . .]
> Tell me if you need a more complete stacktrace. I try to work around this
> bug, changing the AST, without success. The error looks the same {*}each
> time{*}.
> To reproduce:
> $ tar xvfz testcase-asttransform-ko.tar.gz
> $ cd groovyInfra
> $ ./gradlew publishMavenPublicationToMavenLocal
> $ cd ..
> $ cd t620g
> $ ./gradlew assemble
> => BROKEN HERE
> Thanks for your help !
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