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[Bug c++/49338] wrong code with -O2 and -O3
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 9 Jun 2011 08:22:20 +0000
- Subject: [Bug c++/49338] wrong code with -O2 and -O3
- Auto-submitted: auto-generated
- References: <bug-49338-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49338
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution| |INVALID
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-09 08:22:18 UTC ---
double get() const
{
U64 rv=m_Value.m_U64 & ~((U64)1);
const double* pRv=(double*)(&rv);
return *pRv;
}
is an obvious aliasing violation.