The following code:
c { dg-do compile }
c { dg-options "-O2 -std=legacy" }
       LOGICAL*1 l1
       INTEGER*1 i1
       l1 = i1
       END
 
produces mismatch types in comparision.
See PR 22368 for the patch which catches this.
logint-1.f: In function 'MAIN__':
logint-1.f:5: error: types mismatch in comparsion
int1D.0
int4D.2
i1D.464 != 0;

-- 
           Summary: fortran produces mismatch types in comparision with
                    integer to logic assignment
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,sayle at gcc dot gnu dot
                    org
OtherBugsDependingO 22368
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22527

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