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Eric Milles commented on GROOVY-9347: ------------------------------------- {{StaticTypeCheckingVisitor#inferSAMType}} cannot collect generics correctly from {{forEach(Consumer<? super T> c)}} and so the param type is Object. PR #1126 fixes the assignment case, which is handled by separate methods: {code:groovy} int sum = 0 java.util.function.Consumer<? super Integer> add = i -> sum += i {code} > STC: lambda expression on wildcard generics fail to resolve param type(s) > ------------------------------------------------------------------------- > > Key: GROOVY-9347 > URL: https://issues.apache.org/jira/browse/GROOVY-9347 > Project: Groovy > Issue Type: Bug > Affects Versions: 3.0.0-rc-2 > Reporter: Eric Milles > Priority: Major > > Follow up to GROOVY-9342. Consider the following: > {code:groovy} > @groovy.transform.CompileStatic > class Test1 { > static int acc = 1 > static { [1, 2, 3].forEach(e -> acc += e) } > } > assert Test1.acc == 7 > {code} > {code} > org.codehaus.groovy.control.MultipleCompilationErrorsException: startup > failed: > TestScript60.groovy: 5: [Static type checking] - Cannot find matching > method int#plus(java.lang.Object). Please check if the declared type is > correct and if the method exists. > @ line 5, column 49. > atic { [1, 2, 3].forEach(e -> acc += e) > ^ > 1 error > at > org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:287) > at > org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1091) > at > org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:633) > at > org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:612) > at > org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:589) > at > groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:367) > at > groovy.lang.GroovyClassLoader.lambda$parseClass$2(GroovyClassLoader.java:310) > ... > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)