Hi Florian Weimer , Keen to hearing from your side further like whether I should try devtoolset-9 first for example. I want to use std::filesystem. Thanks. Ming ________________________________ From: Ming Cheng <chengm349@xxxxxxxxxxx> Sent: Tuesday, November 9, 2021 2:52 AM To: Florian Weimer <fweimer@xxxxxxxxxx> Cc: Ming Cheng via Gcc-help <gcc-help@xxxxxxxxxxx> Subject: Re: DWARF error Hi Florian, /opt/rh/devtoolset-10/root/bin/g++ -rdynamic -std=c++20 AS7_DEC/./CMESymService.o AS7_DEC/./CMESymAcceptor.o AS7_DEC/./CMEUtils.o AS7_DEC/./CMESbeFixConnector.o AS7_DEC/./CMESbeFixProcessor.o AS7_DEC/./CMESbeFixService.o AS7_DEC/./CMESubscriptionManager.o AS7_DEC/./CMEApplication.o AS7_DEC/./CMESbeFixSession.o AS7_DEC/./CMESymApplication.o AS7_DEC/./CMEConfiguration.o AS7_DEC/./CMEDefs.o AS7_DEC/./CMESbeFixApplication.o AS7_DEC/sbefix_mdp/libsbefix.a -lboost_thread -lboost_filesystem -lboost_system -lboost_regex -lboost_program_options -lxerces-c /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/utils/AS7_DEC/libutils.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/cbase/AS7_DEC/libcbase.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/csock/AS7_DEC/libcsock.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/sock/AS7_DEC/libsock.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/utl/AS7_DEC/libutl.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/csock/AS7_DEC/libcsock.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/depth/AS7_DEC/libdepth.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/msg/AS7_DEC/libmsg.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/cbase/AS7_DEC/libcbase.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/sock/AS7_DEC/libsock.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/mktutil/AS7_DEC/libmktutil.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/optionlib/AS7_DEC/liboptions.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/sym/AS7_DEC/libsymproxy.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/utl/AS7_DEC/libutl.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/utils/AS7_DEC/libutils.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/cbase/AS7_DEC/libcbase.a /fs02/home/jenkins/workspace/Rel-12-2-0_PROD/Rel-12-2-51_AS7_DEC/sym/AS7_DEC/libsymproxy.a /fs02/home/mcheng/workspace/gitwork_ldn/Order_Entry/face/FtAcceptor/AS7_DEC/libacceptor.a /fs02/home/mcheng/workspace/gitwork_ldn/Order_Entry/face/FtSymAcceptor/AS7_DEC/libsymacceptor.a /fs02/home/mcheng/workspace/gitwork_ldn/Order_Entry/face/AS7_DEC/libconnection.a /fs02/home/mcheng/workspace/gitwork_ldn/Order_Entry/face/AS7_DEC/libface.a -L/fs02/home/thirdparty.bak.22483/snappy/lib/AS7_DEC -lsnappy /fs02/home/thirdparty.bak.22483/pugixml/1.6/AS7_DEC/lib64/libpugixml.a -lpthread -lstdc++ -lz -lm -lcrypto -lrt -ldl -o AS7_DEC/cme_md_flex /opt/rh/devtoolset-10/root/usr/libexec/gcc/x86_64-redhat-linux/10/ld: /opt/rh/devtoolset-10/root/usr/libexec/gcc/x86_64-redhat-linux/10/ld: DWARF error: could not find variable specification at offset e7d94 Difficult to give you input files. Regards. Ming ________________________________ From: Florian Weimer <fweimer@xxxxxxxxxx> Sent: Monday, November 8, 2021 9:19 AM To: Ming Cheng <chengm349@xxxxxxxxxxx> Cc: Ming Cheng via Gcc-help <gcc-help@xxxxxxxxxxx> Subject: Re: DWARF error * Ming Cheng: > What are those missing info? Once I know, I’ll raise a proper ticket. Exact command line, and the necessary input files to reproduce the issue if possible. Thanks, Florian