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https://issues.apache.org/jira/browse/GROOVY-11955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King updated GROOVY-11955:
-------------------------------
Labels: (was: StackOverflowError)
> Provide a size guard for flattening of chained method calls
> -----------------------------------------------------------
>
> Key: GROOVY-11955
> URL: https://issues.apache.org/jira/browse/GROOVY-11955
> Project: Groovy
> Issue Type: Bug
> Reporter: Daniel Kuppitz
> Assignee: Daniel Sun
> Priority: Major
> Fix For: 6.0.0-alpha-1, 5.0.5
>
>
> If the following statement is pasted into a Groovy shell, it's going to throw
> a {{StackoverflowException}}:
> {code}
> static def generateSpec(def count) {
> def assertions = (1..count).collect { i ->
> "assert obj.field${i % 10} == 'value${i % 10}'"
> }.join("\n\t\t\t\t")
> def spec = """\
> @Grab('org.spockframework:spock-core:2.4-groovy-5.0')
> import spock.lang.Specification
> class MethodTooLargeReproducerSpec extends Specification {
> def "verifyAll with ${count} assertions"() {
> given:
> def obj = [field0: 'value0', field1: 'value1', field2: 'value2',
> field3: 'value3', field4: 'value4', field5: 'value5',
> field6: 'value6', field7: 'value7', field8: 'value8',
> field9: 'value9']
> expect:
> verifyAll {
> \t${assertions}
> }
> }
> }
> """
> }
> def gcl = new GroovyClassLoader()
> (589..597).step(1).each { count ->
> def src = generateSpec(count)
> try {
> gcl.parseClass(src)
> println "OK: ${count}"
> } catch (Exception e) {
> println "FAILED: ${count} — ${e.message}"
> System.exit(1)
> }
> }
> {code}
> Trying to nail it to a certain number of method calls by starting with less
> methods and then adding one at a time doesn't work, since that apparently
> never throws an exception.
> Note that this is not tied to {{StringBuilder::append}}. We discovered this
> issue in Gremlin, where it's pretty common to have a lot of chained method
> calls.
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