[Bug middle-end/22456] New: [4.1 regression] missing "is used uninitialized" warning

["reichelt at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

The following code used to trigger an "is used uninitialized" warning
if compiled with -Wall. Since a few days I'm not getting a warning anymore
on mainline (C and C++ frontend).

========================
void foo()
{
    int i;
    while (i) ++i;
}
========================

-- 
           Summary: [4.1 regression] missing "is used uninitialized" warning
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: diagnostic, monitored
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22456