EAP 110.137: Frequent Trove hashcode errors

Please attach complete stack trace

On 10/21/2011 5:30 PM, Gordon Tyler wrote:

Quite frequently with EAP 110.137 I'm getting errors like this:

>

Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.

>

I've tried invalidating caches but it seems to have had no effect. The error doesn't seem to be causing any visible problem though.

>

---
Original message URL: http://devnet.jetbrains.net/message/5323609#5323609

Reported via exception reporter: http://ea.jetbrains.com/browser/ea_reports/305023

And here for good measure:

Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
     at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
     at gnu.trove.THashSet.rehash(THashSet.java:197)
     at gnu.trove.THash.postInsertHook(THash.java:242)
     at gnu.trove.THashSet.add(THashSet.java:147)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:205)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.PackagePrefixFileSystemItem.processChildren(PackagePrefixFileSystemItem.java:180)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.processVariants(FileReference.java:329)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolveInContext(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolve(FileReference.java:150)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:561)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:557)
     at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:129)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:134)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:145)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.multiResolve(FileReference.java:134)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:59)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.access$000(PsiMultiReference.java:36)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:42)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:37)
     at java.util.Arrays.mergeSort(Arrays.java:1270)
     at java.util.Arrays.sort(Arrays.java:1210)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:78)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolve(PsiMultiReference.java:101)
     at com.intellij.codeInsight.TargetElementUtilBase.getReferenceOrReferencedElement(TargetElementUtilBase.java:266)
     at com.intellij.codeInsight.TargetElementUtil.getReferenceOrReferencedElement(TargetElementUtil.java:89)
     at com.intellij.codeInsight.TargetElementUtilBase.findTargetElement(TargetElementUtilBase.java:168)
     at com.intellij.codeInsight.TargetElementUtil.findTargetElement(TargetElementUtil.java:56)
     at com.intellij.codeInsight.navigation.actions.GotoDeclarationAction.findTargetElementsNoVS(GotoDeclarationAction.java:204)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.getInfoAt(CtrlMouseHandler.java:389)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.access$1500(CtrlMouseHandler.java:84)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.doExecute(CtrlMouseHandler.java:552)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.access$1400(CtrlMouseHandler.java:479)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2$1.run(CtrlMouseHandler.java:536)
     at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:853)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2.run(CtrlMouseHandler.java:534)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:177)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:204)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:168)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1.run(CtrlMouseHandler.java:529)
     at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:429)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
     at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:138)



java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
     at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
     at gnu.trove.THashSet.rehash(THashSet.java:197)
     at gnu.trove.THash.postInsertHook(THash.java:242)
     at gnu.trove.THashSet.add(THashSet.java:147)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:205)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.PackagePrefixFileSystemItem.processChildren(PackagePrefixFileSystemItem.java:180)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.processVariants(FileReference.java:329)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolveInContext(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolve(FileReference.java:150)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:561)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:557)
     at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:129)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:134)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:145)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.multiResolve(FileReference.java:134)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:59)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.access$000(PsiMultiReference.java:36)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:42)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:37)
     at java.util.Arrays.mergeSort(Arrays.java:1270)
     at java.util.Arrays.sort(Arrays.java:1210)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:78)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolve(PsiMultiReference.java:101)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.resolve(CtrlMouseHandler.java:456)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.getInfoAt(CtrlMouseHandler.java:386)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.access$1500(CtrlMouseHandler.java:84)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.doExecute(CtrlMouseHandler.java:552)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.access$1400(CtrlMouseHandler.java:479)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2$1.run(CtrlMouseHandler.java:536)
     at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:853)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2.run(CtrlMouseHandler.java:534)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:177)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:204)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:168)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1.run(CtrlMouseHandler.java:529)
     at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:429)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
     at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:138)



java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
     at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
     at gnu.trove.THashSet.rehash(THashSet.java:197)
     at gnu.trove.THash.postInsertHook(THash.java:242)
     at gnu.trove.THashSet.add(THashSet.java:147)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:205)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.PackagePrefixFileSystemItem.processChildren(PackagePrefixFileSystemItem.java:180)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.processVariants(FileReference.java:329)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolveInContext(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolve(FileReference.java:150)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:561)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:557)
     at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:129)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:134)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:145)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.multiResolve(FileReference.java:134)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:59)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.access$000(PsiMultiReference.java:36)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:42)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:37)
     at java.util.Arrays.mergeSort(Arrays.java:1270)
     at java.util.Arrays.sort(Arrays.java:1210)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:78)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolve(PsiMultiReference.java:101)
     at com.intellij.codeInsight.TargetElementUtilBase.getReferenceOrReferencedElement(TargetElementUtilBase.java:266)
     at com.intellij.codeInsight.TargetElementUtil.getReferenceOrReferencedElement(TargetElementUtil.java:89)
     at com.intellij.codeInsight.TargetElementUtilBase.findTargetElement(TargetElementUtilBase.java:168)
     at com.intellij.codeInsight.TargetElementUtil.findTargetElement(TargetElementUtil.java:56)
     at com.intellij.codeInsight.navigation.actions.GotoDeclarationAction.findTargetElementsNoVS(GotoDeclarationAction.java:204)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.getInfoAt(CtrlMouseHandler.java:389)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.access$1500(CtrlMouseHandler.java:84)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.doExecute(CtrlMouseHandler.java:552)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.access$1400(CtrlMouseHandler.java:479)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2$1.run(CtrlMouseHandler.java:536)
     at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:853)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2.run(CtrlMouseHandler.java:534)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:177)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:204)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:168)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1.run(CtrlMouseHandler.java:529)
     at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:429)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
     at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:138)



java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
     at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
     at gnu.trove.THashSet.rehash(THashSet.java:197)
     at gnu.trove.THash.postInsertHook(THash.java:242)
     at gnu.trove.THashSet.add(THashSet.java:147)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:205)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.PackagePrefixFileSystemItem.processChildren(PackagePrefixFileSystemItem.java:180)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.processVariants(FileReference.java:329)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolveInContext(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolve(FileReference.java:150)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:561)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:557)
     at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:129)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:134)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:145)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.multiResolve(FileReference.java:134)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:59)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.access$000(PsiMultiReference.java:36)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:42)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:37)
     at java.util.Arrays.mergeSort(Arrays.java:1270)
     at java.util.Arrays.sort(Arrays.java:1210)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:78)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolve(PsiMultiReference.java:101)
     at com.intellij.codeInsight.TargetElementUtilBase.getReferenceOrReferencedElement(TargetElementUtilBase.java:266)
     at com.intellij.codeInsight.TargetElementUtil.getReferenceOrReferencedElement(TargetElementUtil.java:89)
     at com.intellij.codeInsight.TargetElementUtilBase.findTargetElement(TargetElementUtilBase.java:168)
     at com.intellij.codeInsight.TargetElementUtil.findTargetElement(TargetElementUtil.java:56)
     at com.intellij.codeInsight.navigation.actions.GotoDeclarationAction.findTargetElementsNoVS(GotoDeclarationAction.java:204)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.getInfoAt(CtrlMouseHandler.java:389)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.access$1500(CtrlMouseHandler.java:84)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.doExecute(CtrlMouseHandler.java:552)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.access$1400(CtrlMouseHandler.java:479)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2$1.run(CtrlMouseHandler.java:536)
     at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:853)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2.run(CtrlMouseHandler.java:534)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:177)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:204)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:168)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1.run(CtrlMouseHandler.java:529)
     at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:429)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
     at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:138)



java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. object #1 =PsiElementResolveResult: com; object #2 =PsiElementResolveResult: com
     at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
     at gnu.trove.THashSet.rehash(THashSet.java:197)
     at gnu.trove.THash.postInsertHook(THash.java:242)
     at gnu.trove.THashSet.add(THashSet.java:147)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:205)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$3.execute(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.PackagePrefixFileSystemItem.processChildren(PackagePrefixFileSystemItem.java:180)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.processVariants(FileReference.java:329)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolveInContext(FileReference.java:199)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.innerResolve(FileReference.java:150)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:561)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference$MyResolver.resolve(FileReference.java:557)
     at com.intellij.psi.impl.source.resolve.ResolveCache$2.compute(ResolveCache.java:129)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:134)
     at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:145)
     at com.intellij.psi.impl.source.resolve.reference.impl.providers.FileReference.multiResolve(FileReference.java:134)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolves(PsiMultiReference.java:59)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.access$000(PsiMultiReference.java:36)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:42)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference$1.compare(PsiMultiReference.java:37)
     at java.util.Arrays.mergeSort(Arrays.java:1270)
     at java.util.Arrays.sort(Arrays.java:1210)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.chooseReference(PsiMultiReference.java:78)
     at com.intellij.psi.impl.source.resolve.reference.impl.PsiMultiReference.resolve(PsiMultiReference.java:101)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.resolve(CtrlMouseHandler.java:456)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.getInfoAt(CtrlMouseHandler.java:386)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler.access$1500(CtrlMouseHandler.java:84)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.doExecute(CtrlMouseHandler.java:552)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider.access$1400(CtrlMouseHandler.java:479)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2$1.run(CtrlMouseHandler.java:536)
     at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:853)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1$2.run(CtrlMouseHandler.java:534)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:177)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:204)
     at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:168)
     at com.intellij.codeInsight.navigation.CtrlMouseHandler$TooltipProvider$1.run(CtrlMouseHandler.java:529)
     at com.intellij.openapi.application.impl.ApplicationImpl$7.run(ApplicationImpl.java:429)
     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
     at java.lang.Thread.run(Thread.java:662)
     at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:138)

Thank you, seems to be IDEA-74219

Original message URL: http://devnet.jetbrains.net/message/5323618#5323618