Created attachment 641436 [details] gcc47-c++-cxa_vec_new-check.patch This upstream patch fixes an integer overflow in a libstdc++ ABI support function. GCC-generated code does not call this function, but code compiled with other compilers might (notably those based on the EDG front end). As a result, no Fedora packages need to be rebuilt to make this change effective. I have built gcc-4.7.2-7.fc18 with this patch and checked that the disassembly of libstdc++.so.6 includes the change.
gcc-4.7.2-8.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/gcc-4.7.2-8.fc18
Package gcc-4.7.2-8.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing gcc-4.7.2-8.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-17928/gcc-4.7.2-8.fc18 then log in and leave karma (feedback).
gcc-4.7.2-8.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.