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CentOS 6.2 + GNU gdb (GDB) Red Hat Enterprise Linux (7.2-50.el6)
When I debug a simple c++ code with GDB, I saw the following warning:
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.47.el6_2.9.i686 libgcc-4.4.6-3.el6.i686 libstdc++-4.4.6-3.el6.i686
debuginfo-install is a command of yum-utils, so
yum install yum-utils
debuginfo-install glibc
if the warning's still there, edit /etc/yum.repos.d/CentOS-Debuginfo.repo, set enabled=1