[Bug fortran/24806] New: accepts invalid DO construct code

["uttamp at us dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Mainline gfortran accepts following invalid code.
$ cat do_test.f90
program test_do
j = 0
loop:  do 100 i = 1, 2
    j = j + 1
100  continue
end program test_do

$ gfortran do_test.f90
$ gfortran -v
Using built-in specs.
Target: powerpc64-linux
Configured with: /home/gccbuild/gcc_trunk_anonsvn/trunk/configure
--prefix=/opt/gcc-nightly/trunk-20051110 --build=powerpc64-linux
--host=powerpc64-linux --target=powerpc64-linux --with-cpu=default32
--with-as=/opt/gcc-nightly/trunk-20051110/bin/as
--with-ld=/opt/gcc-nightly/trunk-20051110/bin/ld --enable-threads=posix
--enable-shared --enable-__cxa_atexit
--enable-languages=c,c++,f95,java,objc,obj-c++ --enable-checking
--with-mpfr=/opt/gcc-nightly/trunk-20051110
Thread model: posix
gcc version 4.1.0 20051110 (experimental)


-- 
           Summary: accepts invalid DO construct code
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: uttamp at us dot ibm dot com
 GCC build triplet: powepc64-linux
  GCC host triplet: powerpc64-linux
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24806