John DeRegnaucourt created GROOVY-11192:
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Summary: 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
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.
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