On Tue, 11 Oct 2022 16:02:41 GMT, Andrew Haley <a...@openjdk.org> wrote:
> A bug in GCC causes shared libraries linked with -ffast-math to disable > denormal arithmetic. This breaks Java's floating-point semantics. > > The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522 > > One solution is to save and restore the floating-point control word around > System.loadLibrary(). This isn't perfect, because some shared library might > load another shared library at runtime, but it's a lot better than what we do > now. > > However, this fix is not complete. `dlopen()` is called from many places in > the JDK. I guess the best thing to do is find and wrap them all. I'd like to > hear people's opinions. This pull request has now been integrated. Changeset: df599dbb Author: Andrew Haley <a...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/df599dbb9b0f0ee96d1ec767ac8821f164ab075d Stats: 277 lines in 10 files changed: 275 ins; 0 del; 2 mod 8295159: DSO created with -ffast-math breaks Java floating-point arithmetic Reviewed-by: ihse, dholmes, stuefe ------------- PR: https://git.openjdk.org/jdk/pull/10661
