reinstall gcc

[Bipin Baghele]

Hi,
I have RHEL 4 update 6 server running ok but due to some application failure
we believe that some gcc related files are corrupted and would like to
reinstall gcc package.
I do have the whole rpm source for RHEL 4 update 6 but tried updating using
up2date command but does not update any files and says package is already
installed. I dont want to remove the package and reinstall because of so
many gcc packages (see below) and their interdependency.
Is their a way I can reinstall all gcc package of same release, in this case
install gcc on update 6 machine from update 6 rpm package list.

# uname -a
Linux gvl7015 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64
x86_64 x86_64 GNU/Linux

# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 6)

# rpm -qa|grep gcc
gcc-3.4.6-9
gcc4-java-4.1.2-14.EL4
gcc4-c++-4.1.2-14.EL4
compat-gcc-32-3.2.3-47.3
libgcc-3.4.6-9
gcc-java-3.4.6-9
compat-libgcc-296-2.96-132.7.2
gcc-c++-3.4.6-9
gcc4-4.1.2-14.EL4
libgcc-3.4.6-9
gcc-gnat-3.4.6-9
compat-gcc-32-c++-3.2.3-47.3
compat-gcc-32-c++-3.2.3-47.3
gcc4-gfortran-4.1.2-14.EL4
gcc-objc-3.4.6-9
gcc-g77-3.4.6-9
compat-gcc-32-3.2.3-47.3