On Wed, Sep 17, 2014 at 9:47 PM, Joseph S. Myers <jos...@codesourcery.com> wrote: > The i386 sfp-machine.h defines FP_TRAPPING_EXCEPTIONS in a way that is > always wrong: it treats a set bit as indicating the exception is > trapping, when actually a set bit (both for 387 and SSE floating > point) indicates it is masked, and a clear bit indicates it is > trapping. This patch fixes this bug. > > Bootstrapped with no regressions on x86_64-unknown-linux-gnu. OK to > commit? > > Note to ia64 maintainers: it would be a good idea to add a definition > of FP_TRAPPING_EXCEPTIONS for ia64, and I expect the new test to fail > on ia64 until you do so. > > libgcc: > 2014-09-17 Joseph Myers <jos...@codesourcery.com> > > * config/i386/sfp-machine.h (FP_TRAPPING_EXCEPTIONS): Treat clear > bits not set bits as indicating trapping exceptions. > > gcc/testsuite: > 2014-09-17 Joseph Myers <jos...@codesourcery.com> > > * gcc.dg/torture/float128-exact-underflow.c: New test.
My brown paperbag bug :( OK for mainline and release branches. Thanks, Uros.
