Nios Eclipse crashes, free(): invalid pointer - Nios Eclipse crashes, free(): invalid pointer Hi When starting nios ii from quartus the eclipse splash screen appear a short moment and then nothing happend. Starting eclipse from the prompt result in the following error message > ~/intelFPGA/20.1/nios2eds/bin$ ./eclipse-nios2 OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0 free(): invalid pointer Why the error message "free(): invalid pointer"? Is it possible to get more information to trying trace the error? Is there a fix? $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 20.04.1 LTS Release: 20.04 Codename: focal Quartus 20.1 Standard edition with valid license file Quartus was installed according to the installation instructions with all lib add-on installations Added fix according to https://www.intel.com/content/altera-www/global/en_us/index/support/support-resources/knowledge-base/tools/2019/why-does-the-nios--ii-not-installed-after-full-installation-of-t.html > java -version openjdk version "1.8.0_265" OpenJDK Runtime Environment (build 1.8.0_265-8u265-b01-0ubuntu2~20.04-b01) OpenJDK 64-Bit Server VM (build 25.265-b01, mixed mode) > javac -version javac 1.8.0_265 > update-alternatives --config java There is only one alternative in link group java (providing /usr/bin/java): /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java Nothing to configure. > ./eclipse-nios2 -debug Start VM: /home/stefan/intelFPGA/20.1/quartus//linux64/jre64/bin/java -Dosgi.requiredJavaVersion=1.7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -Dosgi.configuration.cascaded=true -Dosgi.instance.area.default=@user.home/sbt4e-20.1-workspace -Dosgi.user.area=@user.home/.altera.sbt4e/20.1.0.711-linux64 -Dosgi.configuration.area=@user.home/.altera.sbt4e/20.1.0.711-linux64/configuration -Dorg.eclipse.swt.internal.gtk.cairoGraphics=false -jar /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -os linux -ws gtk -arch x86_64 -showsplash /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.platform_4.5.2.v20160212-1500/splash.bmp -launcher /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/eclipse -name Eclipse --launcher.library /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.300.v20150602-1417/eclipse_1612.so -startup /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar --launcher.appendVmargs -exitdata 68008 -product org.eclipse.epp.package.cpp.product -pluginCustomization /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/plugin_customization.ini -debug -vm /home/stefan/intelFPGA/20.1/quartus//linux64/jre64/bin/java -vmargs -Dosgi.requiredJavaVersion=1.7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -Dosgi.configuration.cascaded=true -Dosgi.instance.area.default=@user.home/sbt4e-20.1-workspace -Dosgi.user.area=@user.home/.altera.sbt4e/20.1.0.711-linux64 -Dosgi.configuration.area=@user.home/.altera.sbt4e/20.1.0.711-linux64/configuration -Dorg.eclipse.swt.internal.gtk.cairoGraphics=false -jar /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar OpenJDK 64-Bit Server VM warning: ignoring option MaxPermSize=256m; support was removed in 8.0 Configuration location: file:/home/stefan/.altera.sbt4e/20.1.0.711-linux64/configuration/ Configuration file: file:/home/stefan/.altera.sbt4e/20.1.0.711-linux64/configuration/config.ini loaded Install location: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/ Configuration file: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/configuration/config.ini loaded Loading timestamp file from: file:/home/stefan/.altera.sbt4e/20.1.0.711-linux64/configuration/ .baseConfigIniTimestamp No timestamp file found Timestamps found: config.ini in the base: 1591430169000 remembered -1 Shared configuration location: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/configuration/ Framework located: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/plugins/org.eclipse.osgi_3.10.102.v20160118-1700.jar Loading extension: reference:file:org.eclipse.osgi.compatibility.state_1.0.100.v20150402-1551.jar eclipse.properties not found Framework classpath: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/plugins/org.eclipse.osgi_3.10.102.v20160118-1700.jar file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/plugins/ file:/home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2/plugins/org.eclipse.osgi.compatibility.state_1.0.100.v20150402-1551.jar Splash location: /home/stefan/intelFPGA/20.1/nios2eds/bin/eclipse_nios2//plugins/org.eclipse.platform_4.5.2.v20160212-1500/splash.bmp Debug options: file:/home/stefan/intelFPGA/20.1/nios2eds/bin/.options not found Time to load bundles: 34 Starting application: 2950 Application Started: 4714 free(): invalid pointer Replies: Re: Nios Eclipse crashes, free(): invalid pointer Good to know that it is working now, we would be closing the thread. If you have further queries, Please do post a response in the next 15 days. After 15 days, this thread will be transitioned to community support. The community users will be able to help you with your follow-up questions. Warm Regards Replies: Re: Nios Eclipse crashes, free(): invalid pointer The following workaround seems to work, it essentially replace Quartus included java engine with Java 8 cd ..../intelFPGA/20.1/quartus/linux64 mv jre64 jre64_old ln -s /lib/jvm/java-1.8.0-openjdk-amd64/jre jre64 the path to Java 8 jre might be machine specific, mine is at least placed there - 2020-10-08