1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/do_iterator.f90 b/gcc/testsuite/gfortran.dg/do_iterator.f90
new file mode 100644
index 000000000..cb3e50d59
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/do_iterator.f90
@@ -0,0 +1,13 @@
+! { dg-do compile }
+! various checks which verify that we don't change do-iterators
+DO I=1,5       ! { dg-error "cannot be redefined" "changing do-iterator 1" }
+   I=1         ! { dg-error "cannot be redefined" "changing do-iterator 1" }
+END DO
+DO I=1,5       ! { dg-error "cannot be redefined" "changing do-iterator 2" }
+   READ(5,*) I ! { dg-error "cannot be redefined" "changing do-iterator 2" }
+END DO
+DO I=1,5       ! { dg-error "cannot be redefined" "changing do-iterator 3" }
+   READ(5,*,iostat=i) j ! { dg-error "cannot be redefined" "changing do-iterator 3" }
+ENDDO
+END
+! { dg-error "Invalid character" "character" { target *-*-* } 7 }