Solaris 64-bit Developer's Guide

System Limitations Removed

The 64–bit system interfaces are inherently more capable than some of their 32–bit equivalents. Application programmers concerned about year 2038 problems (when 32–bit time_t runs out of time) can use the 64–bit time_t. While 2038 seems a long way off, applications that do computations concerning future events, such as mortgages, might require the expanded time capability.