Bug 336517

Description Jinghua Feng 2011-02-07 10:09:37 EST

Build Identifier: eclipse-SDK-I20100608-0911-aix-motif

Hi,
We experienced a few StringIndexOutOfBoundsException when running eclipse-Automated-Tests (3.6) with IBM latest Java 6 release on AIX PPC-32 platform. The exceptions and stack trace are as following:
java.lang.StringIndexOutOfBoundsException at java.lang.String.<init>(String.java:244) at org.eclipse.core.internal.filesystem.local.Convert.fromPlatformBytes(Convert.java:85) at org.eclipse.core.internal.filesystem.local.unix.UnixFileNatives.bytesToFileName(UnixFileNatives.java:170) at org.eclipse.core.internal.filesystem.local.unix.UnixFileNatives.fetchFileInfo(UnixFileNatives.java:83) at org.eclipse.core.internal.filesystem.local.LocalFileNativesManager.fetchFileInfo(LocalFileNativesManager.java:31) at org.eclipse.core.internal.filesystem.local.LocalFile.fetchInfo(LocalFile.java:144) at org.eclipse.core.filesystem.provider.FileStore.fetchInfo(FileStore.java:277) at org.eclipse.core.tests.filesystem.SymlinkTest.fetchFileInfos(SymlinkTest.java:64) at org.eclipse.core.tests.filesystem.SymlinkTest.makeLinkStructure(SymlinkTest.java:87) at org.eclipse.core.tests.filesystem.SymlinkTest.testBrokenSymlinkAttributes(SymlinkTest.java:111) at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:376) at org.eclipse.test.EclipseTestRunner.run(EclipseTestRunner.java:209) at org.eclipse.test.CoreTestApplication.runTests(CoreTestApplication.java:35) at org.eclipse.test.CoreTestApplication.run(CoreTestApplication.java:31) at org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodWithException(EclipseAppContainer.java:587) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:198) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407) at org.eclipse.equinox.launcher.Main.main(Main.java:1383) at org.eclipse.core.launcher.Main.main(Main.java:34) 

These exception also were seen from following Java -version
java version "1.6.0"
Java(TM) SE Runtime Environment (build pap3260sr9-20101125_01(SR9))
IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 AIX ppc-32 jvmap3260sr9-20101124_69295 (JIT enabled, AOT enabled)
J9VM - 20101124_069295
JIT  - r9_20101028_17488ifx2
GC   - 20101027_AA)
JCL  - 20101119_01
My observation is that native method readlink(name, target, target.length)  in \org.eclipse.core.filesystem\src\org\eclipse\core\internal\filesystem\local\unix\UnixFileNatives.java returns a big number instead of the actual length of file name. When this big number was passed to construct a new string using "return new String(source, 0, length, defaultEncoding);", a StringIndexOutOfBoundsException is thrown. The code snippet in question is as following:
int length = readlink(name, target, target.length); 
if (length > 0) info.setStringAttribute(EFS.ATTRIBUTE_LINK_TARGET, bytesToFileName(target, length)); 
I suspect UnixFileNatives\readlink doesn't work as expect on AIX PPC platform. Could you check if this is the case?
Thanks.

Reproducible: Always

Steps to Reproduce:
run eclipse-Automated-Tests-3.6 with eclipse-SDK-I20100608-0911-aix-motif.zip and IBM JDK 6.0 (AIX/PPC32) such as 6.0 Service Refresh 9 (AIX / PPC32) (pap3260sr9-20101125_01) (J9)