[
https://issues.apache.org/jira/browse/GROOVY-11192?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776891#comment-17776891
]
ASF GitHub Bot commented on GROOVY-11192:
-----------------------------------------
blackdrag commented on PR #1970:
URL: https://github.com/apache/groovy/pull/1970#issuecomment-1769267973
could you please add a test case:
interface A<G1, G2> {
}
class B<G3> implements A<Long, G3>{
}
A<Long, String> a = new B<>()
oh yes.. using shouldCompile would be better than assertScript where
possible. We have to test we repeating names for generic types because of
mistakes, that have been don in the past where generic types leaked to other
classes with the wrong name, and then solutions that worked only because of the
just mentioned reason and not if the names are different.
> Code that causes Groovy Compiler Crash
> --------------------------------------
>
> Key: GROOVY-11192
> URL: https://issues.apache.org/jira/browse/GROOVY-11192
> Project: Groovy
> Issue Type: Bug
> Components: Compiler
> Affects Versions: 4.0.15
> Environment: I am running on MacBook Pro, but I think this is a
> probably regardless of environment. I have been able to repeat this bug for
> Groovy versions from 3.0.10 to 4.0.15 and all in between.
> Reporter: John DeRegnaucourt
> Priority: Major
> Labels: Generics, compiler, crash, parametize, type
> Attachments: MapLong-3.groovy,
> TestCompilerCrashOnTemplateArgCount.groovy
>
>
> When attempting to compile the code below, it causes the Groovy compiler to
> crash with:
> java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for length 1
> at
> org.codehaus.groovy.ast.tools.GenericsUtils.createGenericsSpec(GenericsUtils.java:494)
> at
> org.codehaus.groovy.ast.tools.GenericsUtils.createGenericsSpec(GenericsUtils.java:480)
> at
> org.codehaus.groovy.ast.tools.GenericsUtils.parameterizeType(GenericsUtils.java:293)
>
> The crash is caused because the GenericType parameter is missing on line 9 in
> TestCompilerCrashOnTemplateArgCount:
> private Map<Long, String> map = new MapLong<>() // causes compiler crash
> ...but
> private Map<Long, String> map2 = new MapLong<String>() // doest not cause
> compiler crash
>
> The compiler is expecting one argument, but a no argument array was
> allocated. When it attempts to access the array at element [0], the compiler
> hits ArrayOutOfBoundsException.
>
> This is super easy to repeat with the two tiny source files attached.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
