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Eric Milles updated GROOVY-11192: --------------------------------- Fix Version/s: 4.0.16 > Code that causes Groovy Compiler Crash > -------------------------------------- > > Key: GROOVY-11192 > URL: https://issues.apache.org/jira/browse/GROOVY-11192 > Project: Groovy > Issue Type: Bug > Components: Static Type Checker > 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 > Assignee: Eric Milles > Priority: Major > Labels: Generics, compiler, crash, parametize, type > Fix For: 5.0.0-alpha-3, 4.0.16 > > Attachments: MapLong-3.groovy, > TestCompilerCrashOnTemplateArgCount.groovy > > > When attempting to compile the code below, it causes the Groovy compiler to > crash with: > {code} > 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) > {code} > The crash is caused because the GenericType parameter is missing on line 9 in > TestCompilerCrashOnTemplateArgCount: > {code:groovy} > private Map<Long, String> map = new MapLong<>() // causes compiler crash > {code} > ...but > {code:groovy} > private Map<Long, String> map2 = new MapLong<String>() // doest not cause > compiler crash > {code} > 1st source file (TestCompilerCrashOnTemplateArgCount.groovy) > {code:groovy} > package com.x.y.z > import groovy.transform.CompileStatic > @CompileStatic > class TestCompilerCrashOnTemplateArgCount > { > // The line below crashes Groovy Compiler with ArrayOutOfBoundsException > during compilation because no type argument passed to MapLong<>() > private Map<Long, String> map = new MapLong<>() > > // The line below doesn't crash the compiler: > private Map<Long, String> map2 = new MapLong<String>() > } > {code} > 2nd source file (MapLong.groovy): > {code:groovy} > package com.x.y.z > import groovy.transform.CompileStatic > @CompileStatic > class MapLong<V> implements Map<Long, V> > { > int size() { return 0 } > boolean isEmpty() { return false } > boolean containsKey(Object key) { return false } > boolean containsValue(Object value) { return false } > V get(Object key) { return null } > V put(Long key, V value) { return null } > V remove(Object key) { return null } > void putAll(Map<? extends Long, ? extends V> m) { } > void clear() { } > Set<Long> keySet() { return null } > Collection<V> values() { return null } > Set<Entry<Long, V>> entrySet() { return null } > } > {code} > > 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)