c { dg-do compile }
c { dg-options "-O2" }
       LOGICAL*1 l1
       LOGICAL*2 l2
       LOGICAL*4 l4
       INTEGER*1 i1
       INTEGER*2 i2
       INTEGER*4 i4

       i1 = .TRUE.  ! { dg-warning "Extension: Conversion" }
       i2 = .TRUE.  ! { dg-warning "Extension: Conversion" }
       i4 = .TRUE.  ! { dg-warning "Extension: Conversion" }

       i1 = .FALSE. ! { dg-warning "Extension: Conversion" }
       i2 = .FALSE. ! { dg-warning "Extension: Conversion" }
       i4 = .FALSE. ! { dg-warning "Extension: Conversion" }

       i1 = l1      ! { dg-warning "Extension: Conversion" }
       i2 = l1      ! { dg-warning "Extension: Conversion" }
       i4 = l1      ! { dg-warning "Extension: Conversion" }

       i1 = l2      ! { dg-warning "Extension: Conversion" }
       i2 = l2      ! { dg-warning "Extension: Conversion" }
       i4 = l2      ! { dg-warning "Extension: Conversion" }

       i1 = l4      ! { dg-warning "Extension: Conversion" }
       i2 = l4      ! { dg-warning "Extension: Conversion" }
       i4 = l4      ! { dg-warning "Extension: Conversion" }

       l1 = i1      ! { dg-warning "Extension: Conversion" }
       l2 = i1      ! { dg-warning "Extension: Conversion" }
       l4 = i1      ! { dg-warning "Extension: Conversion" }

       l1 = i2      ! { dg-warning "Extension: Conversion" }
       l2 = i2      ! { dg-warning "Extension: Conversion" }
       l4 = i2      ! { dg-warning "Extension: Conversion" }

       l1 = i4      ! { dg-warning "Extension: Conversion" }
       l2 = i4      ! { dg-warning "Extension: Conversion" }
       l4 = i4      ! { dg-warning "Extension: Conversion" }

       END