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Strange error with the most recent libstdc++ snapshot


I downloaded the most recent libstdc++ snapshot from libstdc++'s homepage 
and replaced the libstdc++-v3 directory in Redhat's gcc with the snapshot of 
libstdc++ that I downloaded.  To rebuild gcc/g++ I instructed it to use 
libstdc++-v3 and during configure it said it was using v3.  It built the 
library without any errors and built RPMS for it as well.  I installed the 
new gcc/g++ rpms as well as the new libstdc++ RPMS.  I have a small c++ 
program that I have coded that uses iostream and stdlib and it complies ok 
but when I try to link the program I get a strange error:
/usr/lib/gcc-lib/i386-redhat-linux/2.96/libstdc++.so: undefined reference to 
'_IO_file_xsgent'
/usr/lib/gcc-lib/i386-redhat-linux/2.96/libstdc++.so: undefined reference to 
'_IO_no_init'
/usr/lib/gcc-lib/i386-redhat-linux/2.96/libstdc++.so: undefined reference to 
'_IO_file_doallocate'
I have checked in /usr/lib and libstdc++.so points to libstdc++.3.0.0 which 
seems right to me.  I don't know what else to do/check and I don't think 
RedHat will help me since I'm using a libstdc++ snapshot I download from 
libstdc++'s homepage.  Can anyone here help me?

Luke
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