t...@gmplib.org (Torbjörn Granlund) writes: > It would not break any language rules, afaik.
It would break reasonable expectations of threaded programs intended for the x86 platform... > Before we worry too much, we might want to determine if this could ever > be a real problem. I.e., what happens if only some arbitrary subset of > the cpuvec structure is initialised? A problematic case is if the sqr_basescasse ptr is initialized, and we get an out-of-sync and too large, value for the corresponding threshold, which that implementation can't handle. Not sure what other cases there are. IIRC. > If that's bad, could we *compile* > in initial values which are safe, even if some arbitrary values are then > modified? Sounds doable for the sqr_basecase threshold, at least. On the other hand, on x86_64, maybe all chips we care about have the needed extensions, so it's *easy* to add an mfence or sfence instruction and not have to worry? I guess 32-bit x86 is more painful, since I guess we'd have to check if the instructions are available. Regards, /Niels -- Niels Möller. PGP-encrypted email is preferred. Keyid C0B98E26. Internet email is subject to wholesale government surveillance. _______________________________________________ gmp-devel mailing list gmp-devel@gmplib.org https://gmplib.org/mailman/listinfo/gmp-devel