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  1. JDK
  2. JDK-8139245

compiler crashes with exception on int:new method reference and generic method inference

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    • Icon: Bug Bug
    • Resolution: Fixed
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        Code:

        $ cat LambdaIntNewInf.java
        interface SAM<T> {
            T m(T s);
        }

        public class LambdaIntNewInf {
            
            static <T> SAM<T> infmethod(SAM<T> t) { return t; }

            public static void main(String argv[]) {
                SAM<Object> s = infmethod(int::new);
                s.m();
            }
        }

         Java version:

        $ javac -version
        javac 1.9.0-ea

        Actual compilation result:

        $ javac LambdaIntNewInf.java
        An exception has occurred in the compiler (1.9.0-ea). Please file a bug at the Java Bug Database (http://bugreport.java.com/bugreport/) after checking the database for duplicates. Include your program and the following diagnostic in your report. Thank you.
        java.lang.NullPointerException
        at com.sun.tools.javac.comp.Resolve$ConstructorReferenceLookupHelper.lookup(Resolve.java:3188)
        at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3223)
        at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3208)
        at com.sun.tools.javac.comp.Resolve.getMemberReference(Resolve.java:2597)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredChecker.visitReference(DeferredAttr.java:1240)
        at com.sun.tools.javac.tree.JCTree$JCMemberReference.accept(JCTree.java:2149)
        at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
        at com.sun.tools.javac.comp.DeferredAttr$FilterScanner.scan(DeferredAttr.java:970)
        at com.sun.tools.javac.comp.DeferredAttr.isDeferred(DeferredAttr.java:1157)
        at com.sun.tools.javac.comp.Attr.attribArgs(Attr.java:688)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1829)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1598)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:591)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:630)
        at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:1087)
        at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:920)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:591)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:660)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:679)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1135)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:984)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:591)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:660)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1026)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:836)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:591)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:660)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4356)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4263)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4192)
        at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4167)
        at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1232)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:871)
        at com.sun.tools.javac.main.Main.compile(Main.java:254)
        at com.sun.tools.javac.main.Main.compile(Main.java:142)
        at com.sun.tools.javac.Main.compile(Main.java:56)
        at com.sun.tools.javac.Main.main(Main.java:42)

        Expected result:

        Have compiler.err.cant.apply.symbol error.

              sadayapalam Srikanth Adayapalam (Inactive)
              spikalev Sergei Pikalev (Inactive)
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                Created:
                Updated:
                Resolved: