-------- Original Message -------- Subject: [Bug target/30484] Miscompilation of remainder expressions on CPUs of the i386 family Date: 21 Feb 2009 18:45:40 -0000 From: jsm28 at gcc dot gnu dot org gcc-bugzilla@gcc.gnu.org Reply-To: gcc-bugzilla@gcc.gnu.org To: bagnara@cs.unipr.it References: <bug-30484-1710@http.gcc.gnu.org/bugzilla/>
------- Comment #10 from jsm28 at gcc dot gnu dot org 2009-02-21 18:45 ------- This issue was discussed on the WG14 reflector in October 2008, and the general view was that the standard should not make INT_MIN % -1 well defined (as this would impose a significant performance cost on many programs to benefit very few) and probably didn't intend to.
There is still a bug for the -fwrapv case, where clearly both INT_MIN / -1 and INT_MIN % -1 should be well defined, but probably the extra checks if implemented should only be enabled implicitly for -fwrapv, not for C standards conformance modes.