On Sat, Aug 15, 2026 at 02:22:24PM +0200, Stephen Kitt wrote: > Hi, Hi Stephen,
> On Sat, 15 Aug 2026 13:20:20 +0300, Adrian Bunk <[email protected]> wrote: > > On Fri, Aug 14, 2026 at 09:23:58PM +0900, Simon Richter wrote: > > > The floating point results change, though, so the behaviour is different > > > from what the software was tested with, especially the rounding behaviour > > > is a lot more aggressive. > > >... > > > > you can compile software relying on the old behaviour with -mfpmath=387. > > The typical use-case here though is that you have an existing i386 binary, > which you can’t recompile, running with distribution-provided i386 libraries > (or a mixture of i386 libraries provided alongside the binary and > distribution-provided libraries), and it’s the behaviour of the libraries > that may have changed. this whole line of arguing comes across as asking to continue to do a lot of work with a mostly theoretical argument. glibc already uses SSE when available, and there aren't that many other relevant libraries without any ABI break in decades. If there are a handful relevant libraries, continuing to use x87 for these would be easily possible. Does anyone have an example of actual breakage? > Regards, > > Stephen cu Adrian
