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. It seems strange to me that the native library part is here: test/hotspot/jtreg/runtime/jni/TestDenormalFloat/libfast-math.c and the two test files are here: test/hotspot/jtreg/compiler/floatingpoint/TestDenormalDouble.java test/hotspot/jtreg/compiler/floatingpoint/TestDenormalFloat.java And the two tests don't have "@run main/native"... Maybe I'm missing something about what you're trying to test here. ------------- PR: https://git.openjdk.org/jdk/pull/10661
