So, it builds fine with gcc-4.1.1, but if you compile with -O or greater, some operations are broken, such as add and multiply. Looking at the source, the broken operations all use PopArg() twice in the same line. PopArg() is actually replaced by argStack[--argStackP] as a define. So, this: ac = PopArg() + PopArg(); Actually does: ac = argStack[--argStackP] + argStack[--argStackP]; Which has undefined behaviour according to the gcc folks: http://gcc.gnu.org/bugs.html#nonbugs Basically, the --argStackP are done in a random order at best, which results in broken results from the calculator. I've attached a patch that fixes this broken code. Thanks to lu_zero for confirming it. :)
Created attachment 92170 [details, diff] Fixes the above issue.
I've committed this since it's a simple fix and the only ebuild in portage was broken. Hope you don't mind! It should eventually go stable, but I'll leave that up to the sci herd. Thanks
