I have installed Fedora 12 recently and compiled my already running application in c++. After compiling in newly installed OS I got huge error list, these errors are common e.g. error: ‘std::memchr’ is not a member of ‘std’ error: ‘std::sprintf’ has not been declared error: ‘std::strcmp’ has not been declared error: ‘std::strlen’ has not been declared error: ‘std::memcpy’ has not been declared error: ‘std::memset’ has not been declared error: ‘std::strerror’ has not been declared I am not getting these error in old version here is old gcc version is Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-libgcj-multifile --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre --with-cpu=generic --host=x86_64-redhat-linux Thread model: posix gcc version 4.1.2 20080704 (Red Hat 4.1.2-46) ------------------------------------ new gcc version Using built-in specs. Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --enable-plugin --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.4.3 20100127 (Red Hat 4.4.3-4) (GCC) ----------------------------- Any clue to fix these issue without changing my source code?? Thanks in advance -Manoj -- View this message in context: http://old.nabble.com/Error-after-installing-new-version-of-gcc-tp27879757p27879757.html Sent from the gcc - Help mailing list archive at Nabble.com.