FULL PRODUCT VERSION : Picked up JAVA_TOOL_OPTIONS: -javaagent:/usr/share/java/jayatanaag.jar java version "1.8.0_45" Java(TM) SE Runtime Environment (build 1.8.0_45-b14) Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode) ADDITIONAL OS VERSION INFORMATION : Linux attila-pc 3.19.0-21-generic #21-Ubuntu SMP Sun Jun 14 18:31:11 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux A DESCRIPTION OF THE PROBLEM : A lambda method, returning anything but not void, has 1+ parameters, passed to a method or constructor, can't invoke MethodHandle::invoke passing the lambda's parameter to MethodHandle::invoke. See the example code. STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : Try compiling the code specified below at the "Source code for an executable test case:" field. EXPECTED VERSUS ACTUAL BEHAVIOR : EXPECTED - The code compiles. ACTUAL - The code doesn't compiles. ERROR MESSAGES/STACK TRACES THAT OCCUR : ant -f /home/attila/develop/TermLib -Djavac.includes=JavacBug.java -Dnb.internal.action.name=run.single -Drun.class=JavacBug run-single init: Deleting: /home/attila/develop/TermLib/build/built-jar.properties deps-jar: Updating property file: /home/attila/develop/TermLib/build/built-jar.properties Compiling 1 source file to /home/attila/develop/TermLib/build/classes 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: typecode ERROR at com.sun.tools.javac.jvm.Code.typecode(Code.java:252) at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:269) at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:951) at com.sun.tools.javac.jvm.Gen.genArgs(Gen.java:968) at com.sun.tools.javac.jvm.Gen.visitApply(Gen.java:1909) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465) at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:949) at com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1846) at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1296) at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:739) at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:774) at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:760) at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:811) at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1160) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909) at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:739) at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:774) at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:1033) at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:996) at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778) at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:739) at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2528) at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:745) at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1572) at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1536) 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 sun.reflect.GeneratedMethodAccessor241.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:56) at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1159) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:935) at org.netbeans.modules.java.source.ant.JavacTask.execute(JavacTask.java:145) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.java:396) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:435) at org.apache.tools.ant.Target.performTasks(Target.java:456) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) at org.apache.tools.ant.Project.executeTarget(Project.java:1364) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1248) at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:286) at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:555) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153) /home/attila/develop/TermLib/nbproject/build-impl.xml:949: The following error occurred while executing this line: /home/attila/develop/TermLib/nbproject/build-impl.xml:265: Compile failed; see the compiler error output for details. BUILD FAILED (total time: 0 seconds) REPRODUCIBILITY : This bug can be reproduced always. ---------- BEGIN SOURCE ---------- import java.lang.invoke.MethodHandle; class JavacBug { private static interface Obj2Obj { Object run(Object obj) throws Throwable; } private static void m(Obj2Obj param) { } public static void main(String[] args) { m((obj) -> { MethodHandle mhandle = null; mhandle.invoke(obj); return null; }); } } ---------- END SOURCE ---------- CUSTOMER SUBMITTED WORKAROUND : Instead of mhandle.invoke(obj); use a temp variable: Object var = obj; mhandle.invoke(var);
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