GCC 4.6.3 has been released with 70 bug-fixes and other work. GCC is the official GCC compiler of the unfinished GNU operating system. GCC has been adopted as the standard compiler by most modern Unix-like computer operating systems, including Linux, the BSD family and Mac OS X. The GCC version 4.7 should be officially released in March or April with some performance improvements, new CPU support, language enhancements, mature Intel Sandy/Ivy Bridge support, and initial Intel Haswell support.
Source: https://thehackernews.com/2012/03/gcc-463-released-with-70-bug-fixes.html