AN created GROOVY-10774:
---------------------------
Summary: Static compilation error using generic classes with maps
Key: GROOVY-10774
URL: https://issues.apache.org/jira/browse/GROOVY-10774
Project: Groovy
Issue Type: Bug
Components: Compiler
Affects Versions: 3.0.12, 3.0.11
Environment: Windows using Java 1.8.0_211
Reporter: AN
I was updating an old library to use Groovy 3 and I found a static compilation
error. The error starts occurring since Groovy 2.5.16, previously tested
versions of 2.5.x compile successfully.
The error can be reproduced with:
{code:groovy}
import groovy.transform.CompileStatic
@CompileStatic
class MyGenericClass<K> {
//protected LinkedHashMap<K, String> valuesMap = new LinkedHashMap<>()
protected Map<String, K> keysMap = new LinkedHashMap<>()
void put(K k, String v) {
keysMap.put(v, k)
//valuesMap.put(k, v)
}
} {code}
The error only happens when the parametrized type is used as the value of the
map.
{code}
2022-09-29T14:24:28.708-0400 [ERROR] [system.err]
C:\WP\GroovyGenerics\src\main\groovy\test\MyGenericClass.groovy: 11: [Static
type checking] - Cannot call java.util.Map <String, K>#put(java.lang.String, K)
with arguments [java.lang.String, K]
2022-09-29T14:24:28.708-0400 [ERROR] [system.err] @ line 11, column 9.
2022-09-29T14:24:28.708-0400 [ERROR] [system.err] keysMap.put(v, k)
2022-09-29T14:24:28.708-0400 [ERROR] [system.err] ^
2022-09-29T14:24:28.708-0400 [ERROR] [system.err]
2022-09-29T14:24:28.708-0400 [ERROR] [system.err] 1 error
2022-09-29T14:24:28.708-0400 [ERROR] [system.err]{code}
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