[Bug libstdc++/24975] New: Aliasing problems inside libstdc++

[rguenth at gcc dot gnu dot org]

We currently miscompile DLV with -fstrict-aliasing, and the only aliasing
issues
that are visible are inside libstdc++:

/usr/include/c++/4.1.0/bits/basic_string.h:180: warning: dereferencing
type-punned pointer will break strict-aliasing rules
/usr/include/c++/4.1.0/bits/stl_set.h:348: warning: dereferencing type-punned
pointer will break strict-aliasing rules
/usr/include/c++/4.1.0/bits/stl_set.h:409: warning: dereferencing type-punned
pointer will break strict-aliasing rules

this is with a patch to enable aliasing warnings for C++


-- 
           Summary: Aliasing problems inside libstdc++
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24975