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

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 ``` I have tried the following methods and none of them fix the problems: Search SO `yum install glibc` `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` In fact, when I install those RPM one by one, I just realized that they are installed already. ``` [root@localhost Excluded]# rpm -ivh glibc-2.12-1.47.el6_2.9.i686.rpm Preparing... ########################################### [100%] package glibc-2.12-1.47.el6_2.9.i686 is already installed [root@localhost Excluded]# ls *.rpm glibc-2.12-1.47.el6_2.9.i686.rpm libgcc-4.4.6-3.el6.i686.rpm [root@localhost Excluded]# rpm -ivh libgcc-4.4.6-3.el6.i686.rpm Preparing... ########################################### [100%] package libgcc-4.4.6-3.el6.i686 is already installed [root@localhost Excluded]# rpm -ivh libstdc++-4.4.6-3.el6.i686.rpm warning: libstdc++-4.4.6-3.el6.i686.rpm: Header V4 DSA/SHA1 Signature, key ID 192a7d7d: NOKEY Preparing... ########################################### [100%] package libstdc++-4.4.6-3.el6.i686 is already installed file /usr/lib/libstdc++.so.6.0.13 from install of libstdc++-4.4.6-3.el6.i686 conflicts with file from package libstdc++-4.4.6-3.el6.i686 ``` Why GDB cannot find it? Question: Do I have to worry about this issue? If not, how to turn it off? If yes, how to fix it? Thank you