Hi, On Sun, Oct 2, 2016 at 2:17 AM, <u-h...@aetey.se> wrote:
> Hello Henrik, > > On Sun, Oct 02, 2016 at 01:18:29AM +0200, Henrik Gramner wrote: > > Ensuring that emms is issued before every single libc function call is > > likely problematic. > > > > What if we simply document the requirement that C standard library > > functions are assumed to not modify the x87 FPU state unless > > specifically designated to handle floating-point numbers? > > Is it remarkably expensive to reset the FPU state? Yes. > (I am unsure > also how much of the assembler code depends on clobbering it?) > If yes, then such documentation would be a reasonable approach. I would advocate for this approach. I also think we could contact musl developers and see what's going on there. We certainly shouldn't blindly fix this bug by adding an emms in a random place, to me that's like opening pandora's box. Ronald _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
