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This bug was originally marked as duplicate of bug 253036, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.1 (Build 201510222201) VM: Java HotSpot(TM) 64-Bit Server VM, 25.40-b25, Java(TM) SE Runtime Environment, 1.8.0_40-b26 OS: Windows 8 User Comments: GUEST: Changed one single character in a project's file. It is a file that controls what 3rd party software libs are used (dev dependencies). Having changed karma-junit-reporter from 0.3.8 to 0.3.3 possibly caused a out of memory situation. So, in detail: After having changed the character 8 to 3 (and I believe I also pressed Ctrl+S to save change), the IDE went into long streak of high activity, and probably generated this out of memory error. I have a 'grunt server' serving the artefact from high port (9000) in the background, so there was one live task at the time of bug. Stacktrace: java.lang.OutOfMemoryError: Java heap space at java.util.Arrays.copyOf(Arrays.java:3332) at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137) at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121) at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:622) at java.lang.StringBuilder.append(StringBuilder.java:202) at org.netbeans.modules.search.matcher.LineReader$LineInfo.appendCharacter(LineReader.java:163)
Created attachment 157873 [details] stacktrace