I was using certain lex and yacc file on 32 bit little endian Linux machine with gcc compiler.
Now its upgraded to 64 bit it little endian Linux machine with icc compiler.
I am facing lots of run time error which was not there earlier.
Can anyone help me out with some link or document which can help me out to deal with these runtime error.
Any Help will be appreciated.

Just stating that you have a compiler and/or runtime error is not too helpful. Please post code, compiler errors, and other compiler/make instructions.