[Bug c++/33260] New: For scope warning despite -ffor-scope

["gcc at david dot osborn dot name" <gcc-bugzilla at gcc dot gnu dot org>]

The following program produces a variable scope warning, even when compiled
with -ffor-scope, preventing use of -Werror.  The documentation only mentions
warnings being generated if the flag is not given.

int main()
{
        int i;
        {
                for (int i = 0; i < 100; ++i);
                return i;
        }
}

g++ -ffor-scope -Werror -otest test.cpp
cc1plus.exe: warnings being treated as errors
test.cpp: In function 'int main()':
test.cpp:6: warning: name lookup of 'i' changed
test.cpp:3: warning:   matches this 'i' under ISO standard rules
test.cpp:5: warning:   matches this 'i' under old rules


-- 
           Summary: For scope warning despite -ffor-scope
           Product: gcc
           Version: 4.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc at david dot osborn dot name
 GCC build triplet: i686-pc-mingw32
  GCC host triplet: i686-pc-mingw32
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33260