Eirik Bakke created NETBEANS-4095:
-------------------------------------
Summary: NPE saving Java file with type error in for-each
Key: NETBEANS-4095
URL: https://issues.apache.org/jira/browse/NETBEANS-4095
Project: NetBeans
Issue Type: Bug
Components: java - Source
Affects Versions: 11.3
Environment: Java 14, NetBeans with nbjavac plugin installed
Reporter: Eirik Bakke
If, during editing, a for-each loop appears with an incorrect pair of types, an
error dialog shows up showing a NullPointerException every time the Java source
file is saved, interrupting the user. A minimized example exhibiting this
behavior is as follows:
{code:java}
public final class CausesVisitIterableForeachLoopNPE {
public static final void main(String args[]) {
final Map<String,Object> someMap = null;
for (Object someVar : someMap) { }
}
}
{code}
This example causes the IDE to throw the following exception:
{noformat}
java.lang.NullPointerException
at
com.sun.tools.javac.comp.Lower.visitIterableForeachLoop(Lower.java:3275)
at com.sun.tools.javac.comp.Lower.visitForeachLoop(Lower.java:3162)
at
com.sun.tools.javac.tree.JCTree$JCEnhancedForLoop.accept(JCTree.java:1176)
at
com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
at com.sun.tools.javac.comp.Lower.translate(Lower.java:2080)
at
com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
at
com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:167)
at com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3347)
at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1036)
at
com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
at com.sun.tools.javac.comp.Lower.translate(Lower.java:2080)
at
com.sun.tools.javac.tree.TreeTranslator.visitMethodDef(TreeTranslator.java:150)
at
com.sun.tools.javac.comp.Lower.visitMethodDefInternal(Lower.java:2538)
at com.sun.tools.javac.comp.Lower.visitMethodDef(Lower.java:2448)
at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:882)
at
com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
at com.sun.tools.javac.comp.Lower.translate(Lower.java:2080)
at com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2219)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:788)
at
com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
at com.sun.tools.javac.comp.Lower.translate(Lower.java:2080)
at com.sun.tools.javac.comp.Lower.translate(Lower.java:2099)
at
com.sun.tools.javac.comp.Lower.translateTopLevelClass(Lower.java:3813)
at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1691)
at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1532)
at
com.sun.tools.javac.api.JavacTaskImpl$2.process(JavacTaskImpl.java:574)
at
com.sun.tools.javac.api.JavacTaskImpl$Filter.run(JavacTaskImpl.java:651)
at
com.sun.tools.javac.api.JavacTaskImpl.generate(JavacTaskImpl.java:577)
[catch] at
org.netbeans.modules.java.source.nbjavac.indexing.MultiPassCompileWorker.compile(MultiPassCompileWorker.java:303)
at
org.netbeans.modules.java.source.indexing.JavaCustomIndexer.index(JavaCustomIndexer.java:361)
at
org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor$2.run(Indexable.java:138)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runIndexer(RepositoryUpdater.java:275)
at
org.netbeans.modules.parsing.spi.indexing.Indexable$MyAccessor.index(Indexable.java:136)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doIndex(RepositoryUpdater.java:2750)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.access$800(RepositoryUpdater.java:2154)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2636)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$1.run(RepositoryUpdater.java:2634)
at
org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.refreshTransaction(TaskCache.java:540)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.index(RepositoryUpdater.java:2634)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$3.call(RepositoryUpdater.java:3300)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work$3.call(RepositoryUpdater.java:3255)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$4.run(RepositoryUpdater.java:2127)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2123)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.runInContext(RepositoryUpdater.java:2104)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater.access$1500(RepositoryUpdater.java:136)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.scanFiles(RepositoryUpdater.java:3255)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$FileListWork.getDone(RepositoryUpdater.java:3785)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Work.doTheWork(RepositoryUpdater.java:3420)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task._run(RepositoryUpdater.java:6183)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.access$4300(RepositoryUpdater.java:5834)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2$1.run(RepositoryUpdater.java:6099)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:279)
at
org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.performScan(RunWhenScanFinishedSupport.java:83)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6095)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task$2.call(RepositoryUpdater.java:6091)
at
org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:153)
at
org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:335)
at
org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:118)
at
org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:67)
at
org.netbeans.modules.parsing.impl.indexing.RepositoryUpdater$Task.run(RepositoryUpdater.java:6091)
at
java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at
org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1418)
at
org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:45)
at org.openide.util.lookup.Lookups.executeWith(Lookups.java:278)
at
org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)
{noformat}
The problem occurs whether Compile-or-Save is enabled or not. Tested in a Maven
Java project on Java 14.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscr...@netbeans.apache.org
For additional commands, e-mail: commits-h...@netbeans.apache.org
For further information about the NetBeans mailing lists, visit:
https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
