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I updated sources, rebuilt everything, started debugging a sample project MP, and got a NPE inthe middle of debugging. Looks like there is a regression caused by fixed for IZ 87589 (commit was done 10/25 at 6:30 PM by gordonp@netbeans.org). Here is a stack trace: java.lang.NullPointerException at java.io.Writer.write(Writer.java:126) at org.netbeans.modules.cnd.debugger.gdb.GdbProxyVL.logMessage(GdbProxyVL.java:94) at org.netbeans.modules.cnd.debugger.gdb.GdbProxyCL.exec_interrupt(GdbProxyCL.java:597) at org.netbeans.modules.cnd.debugger.gdb.GdbProxy.exec_interrupt(GdbProxy.java:144) at org.netbeans.modules.cnd.debugger.gdb.GdbDebuggerImpl.interrupt(GdbDebuggerImpl.java:185) at org.netbeans.modules.cnd.debugger.gdb.actions.StepActionProvider.runAction(StepActionProvider.java:121) at org.netbeans.modules.cnd.debugger.gdb.actions.StepActionProvider.doAction(StepActionProvider.java:93) at org.netbeans.modules.cnd.debugger.gdb.actions.StepActionProvider$1.run(StepActionProvider.java:143) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932) Here is a part of code, where the exception happened (GdbProxyVL.java:94): public void logMessage(String message) { if (logFile != null) { try { 94: logFile.write(message); logFile.flush(); } catch (IOException ioex) { } } if (gdbConsoleWindow != null) { gdbConsoleWindow.add(message); } }
The root of the problem is in new method logMessage(String message), which does not check if the message is null, and passes it to logFile.write(message), which tries to get message.length() and gets the NPE. I fixed this bug. Tag: release55 User: NikMolchanov Date: 2006/10/25 22:16:08 Modified: cnd/gdb/src/org/netbeans/modules/cnd/debugger/gdb/GdbProxyVL.java Log: IZ 88021 NPE in gdb.GdbProxyVL.logMessage(GdbProxyVL.java:94) - Don't log null messages. File Changes: Directory: /cnd/gdb/src/org/netbeans/modules/cnd/debugger/gdb/ ============================================================== File [changed]: GdbProxyVL.java Url: http://cnd.netbeans.org/source/browse/cnd/gdb/src/org/netbeans/modules/cnd/debugger/gdb/GdbProxyVL.java?r1=1.2.2.18&r2=1.2.2.19 Delta lines: +1 -0 ------------------- --- GdbProxyVL.java 26 Oct 2006 01:30:42 -0000 1.2.2.18 +++ GdbProxyVL.java 26 Oct 2006 05:16:03 -0000 1.2.2.19 @@ -89,6 +89,7 @@ * @param message - a message from the debugger */ public void logMessage(String message) { + if (message == null) return; if (logFile != null) { try { logFile.write(message); ---------------------------------------------------------------------
The fix is integrated in "release55" branch.