1 files changed, 35 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/internal_pack_7.f90 b/gcc/testsuite/gfortran.dg/internal_pack_7.f90
new file mode 100644
index 000000000..0bc30e508
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/internal_pack_7.f90
@@ -0,0 +1,35 @@
+! { dg-do compile }
+! { dg-options "-fdump-tree-original" }
+!
+! Test the fix for PR43072, in which unnecessary calls to
+! internal PACK/UNPACK were being generated.
+!
+! Contributed by Joost VandeVondele <jv244@cam.ac.uk>
+!
+MODULE M1
+  PRIVATE
+  REAL, PARAMETER :: c(2)=(/(i,i=1,2)/)
+CONTAINS
+  ! WAS OK
+  SUBROUTINE S0
+    real :: r
+     r=0
+     r=S2(c)
+     r=S2((/(real(i),i=1,2)/)) ! See comment #1 of the PR
+  END SUBROUTINE S0
+  ! WAS NOT OK
+  SUBROUTINE S1
+    real :: r
+     r=0
+     r=r+S2(c)
+     r=r+S2((/(real(i),i=1,2)/)) ! See comment #1 of the PR
+  END SUBROUTINE S1
+
+  FUNCTION S2(c)
+     REAL, INTENT(IN) :: c(2)
+     s2=0
+  END FUNCTION S2
+END MODULE M1
+! { dg-final { cleanup-modules "M1" } }
+! { dg-final { scan-tree-dump-times "pack" 0 "original" } }
+! { dg-final { cleanup-tree-dump "original" } }