1 files changed, 21 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/implicit_4.f90 b/gcc/testsuite/gfortran.dg/implicit_4.f90
new file mode 100644
index 000000000..2e871b09d
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/implicit_4.f90
@@ -0,0 +1,21 @@
+! { dg-do compile }
+! Verify error diagnosis for invalid combinations of IMPLICIT statements
+IMPLICIT NONE
+IMPLICIT NONE ! { dg-error "Duplicate" }
+END
+
+SUBROUTINE a
+IMPLICIT REAL(b-j) ! { dg-error "cannot follow" }
+implicit none      ! { dg-error "cannot follow" }
+END SUBROUTINE a
+
+subroutine b
+implicit none
+implicit real(g-k) ! { dg-error "Cannot specify" }
+end subroutine b
+
+subroutine c
+implicit real(a-b)
+implicit integer (b-c) ! { dg-error "already" }
+implicit real(d-f), complex(f-g) ! { dg-error "already" }
+end subroutine c