&gt; not sure, but the internals were supposed to be MUCH cleaner and easier to work with.<p>I&#x27;ve bookmarked this bit of GCC code for my own amusement - an anecdote about the quality of GCC&#x27;s codebase:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;gcc-mirror&#x2F;gcc&#x2F;blob&#x2F;7057506456ba18f080679b2fe55ec56ee90fd81c&#x2F;gcc&#x2F;reload.c#L1056-L1110" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;gcc-mirror&#x2F;gcc&#x2F;blob&#x2F;7057506456ba18f080679...</a>