Build GCC lower versions on fedora 8

Hello,
      I have built GCC 4.2.1 on fedora 8 and i tried installing GCC 3.2.3 on the same OS. But after configuration   it shows an error while building. It shows the error in the code like,
             
              error in function regex.c : line no 662 lvalue required for incrementing operand.

I dont understand whether the probl is with the code or with building. Can i build the lower versions while the higher versions are being installed.?