http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45831
--- Comment #16 from Michiel <MichieldeB at aim dot com> 2010-09-30 19:38:55 UTC --- (In reply to comment #15) > (In reply to comment #14) > > > > Is that really too hard? > > You are ignoring everything everybody is saying. If you think it is trivial, > just take one single little case of the ones that bother you and fix it: > > http://gcc.gnu.org/contribute.html > > GCC needs more developers anyway, so you are welcome on board. I am not ignoring everyone, since I formulated things far more concrete than before. And I failed to formulate similar things to warnings for assigning negative expressions to unsigned integers. Another thing that is worth noting, is that recognizing expression as mentioned above is also valuable for optimization, namely if you convert the result later to a smaller integral type, and the larger integral type is larger than the machines integral type, then you better do the computations with the smaller integral type instead. I have to apologize. There are already too many technically interesting things, or just interesting things that are also technically, that I want to do. Furthermore, I think that it will take very much time before I can make my first contribution to the compiler, but I should browse the source to get a better opinion on that. Some library routines would be more attainable, I will think about that.
