JDK-8178296 : wrapper class object passed as parameter value of Stream.reduce method causes compiler assertionerror
  • Type: Bug
  • Component: tools
  • Sub-Component: javac
  • Affected Version: 8u45
  • Priority: P4
  • Status: Closed
  • Resolution: Duplicate
  • OS: generic
  • CPU: generic
  • Submitted: 2017-04-07
  • Updated: 2017-04-07
  • Resolved: 2017-04-07
Related Reports
Duplicate :  
JDK-8069545 - javac, shouldn't check nested stuck lambdas during overload resolution
Description
FULL PRODUCT VERSION :

C:\javastudy\scjp\src\ch07>java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)



ADDITIONAL OS VERSION INFORMATION :
Windows 10

A DESCRIPTION OF THE PROBLEM :
When invoking java.util.stream.Stream.reduce(U identity,
             BiFunction<U,? super T,U> accumulator,
             BinaryOperator<U> combiner) method with a wrapper class object(Integer, Double,...) as the parameter for identity, an assertionerror is thrown by the compiler. Identity when passed with other objects such as String does not throw assertionerror.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected it to compile with no problems.
ACTUAL -

An exception has occurred in the compiler (1.8.0_45). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
java.lang.AssertionError: attribution shouldn't be happening here
        at com.sun.tools.javac.util.Assert.error(Assert.java:133)
        at com.sun.tools.javac.util.Assert.check(Assert.java:94)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:591)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:479)
        at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
        at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
        at com.sun.tools.javac.comp.Resolve.checkMethod(Resolve.java:604)
        at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3797)
        at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3584)
        at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3491)
        at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3470)
        at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3457)
        at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3339)
        at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1806)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:386)
        at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:279)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:245)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:232)
        at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1003)
        at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:829)
        at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:734)
        at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:838)
        at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:579)
        at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1441)
        at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1628)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1699)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1672)
        at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2425)
        at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3084)
        at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3335)
        at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2422)
        at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2416)
        at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3364)
        at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3246)
        at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1806)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:615)
        at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1574)
        at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1296)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:651)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1105)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:994)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4330)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4240)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4169)
        at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4144)
        at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.main.Main.compile(Main.java:381)
        at com.sun.tools.javac.main.Main.compile(Main.java:370)
        at com.sun.tools.javac.main.Main.compile(Main.java:361)
        at com.sun.tools.javac.Main.compile(Main.java:56)
        at com.sun.tools.javac.Main.main(Main.java:42)



ERROR MESSAGES/STACK TRACES THAT OCCUR :

An exception has occurred in the compiler (1.8.0_45). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report.  Thank you.
java.lang.AssertionError: attribution shouldn't be happening here
        at com.sun.tools.javac.util.Assert.error(Assert.java:133)
        at com.sun.tools.javac.util.Assert.check(Assert.java:94)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:591)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:479)
        at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
        at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
        at com.sun.tools.javac.comp.Resolve.checkMethod(Resolve.java:604)
        at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3797)
        at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3584)
        at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3491)
        at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3470)
        at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3457)
        at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3339)
        at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1806)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:386)
        at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:279)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:245)
        at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:232)
        at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1003)
        at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:829)
        at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:734)
        at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:838)
        at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:579)
        at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1441)
        at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1628)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1699)
        at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1672)
        at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2425)
        at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3084)
        at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3335)
        at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2422)
        at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2416)
        at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3364)
        at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3246)
        at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1806)
        at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:615)
        at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1574)
        at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1296)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:651)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1105)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:994)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:566)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:635)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4330)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4240)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4169)
        at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4144)
        at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
        at com.sun.tools.javac.main.Main.compile(Main.java:523)
        at com.sun.tools.javac.main.Main.compile(Main.java:381)
        at com.sun.tools.javac.main.Main.compile(Main.java:370)
        at com.sun.tools.javac.main.Main.compile(Main.java:361)
        at com.sun.tools.javac.Main.compile(Main.java:56)
        at com.sun.tools.javac.Main.main(Main.java:42)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.util.stream.*;
import static java.util.stream.Collectors.*;
import java.util.function.*;
public class CollectorsTest{
	public static void main(String[] args){
		System.out.println(Stream.of(args).map(Integer::new).reduce(new Integer(1),(a,b)->a+b,(a,b)->a+b));
		}
}
---------- END SOURCE ----------
Comments
Kindly upgrade to latest version of 8 or atleast to 8u60 to avoid this issue
07-04-2017
This issue is not reproducible on latest versions of 8 and 9 == 8u121 - Pass 9 ea b164 - Pass == This issue is duplicate of JDK-8069545 which got fixed in 9 ea b51 and backported to 8u60, that confirms the below result == 9 ea b50 - Fail 9 ea b51 - Pass 8u60 - Pass == Closing as duplicate of JDK-8069545
07-04-2017