obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 71 insertions, 0 deletions

diff --git a/gcc/testsuite/gfortran.dg/impure_1.f08 b/gcc/testsuite/gfortran.dg/impure_1.f08
new file mode 100644
index 000000000..9d09eaa4c
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/impure_1.f08
@@ -0,0 +1,71 @@
+! { dg-do run }
+! { dg-options "-std=f2008 -fall-intrinsics" }
+
+! PR fortran/45197
+! Check that IMPURE and IMPURE ELEMENTAL in particular works.
+
+! Contributed by Daniel Kraft, d@domob.eu.
+
+MODULE m
+  IMPLICIT NONE
+
+  INTEGER, PARAMETER :: n = 5
+
+  INTEGER :: i
+  INTEGER :: arr(n)
+
+CONTAINS
+
+  ! This ought to work (without any effect).
+  IMPURE SUBROUTINE foobar ()
+  END SUBROUTINE foobar
+
+  IMPURE ELEMENTAL SUBROUTINE impureSub (a)
+    INTEGER, INTENT(IN) :: a
+
+    arr(i) = a
+    i = i + 1
+
+    PRINT *, a
+  END SUBROUTINE impureSub
+
+END MODULE m
+
+PROGRAM main
+  USE :: m
+  IMPLICIT NONE
+
+  INTEGER :: a(n), b(n), s
+
+  a = (/ (i, i = 1, n) /)
+
+  ! Traverse in forward order.
+  s = 0
+  b = accumulate (a, s)
+  IF (ANY (b /= (/ 1, 3, 6, 10, 15 /))) CALL abort ()
+
+  ! And now backward.
+  s = 0
+  b = accumulate (a(n:1:-1), s)
+  IF (ANY (b /= (/ 5, 9, 12, 14, 15 /))) CALL abort ()
+
+  ! Use subroutine.
+  i = 1
+  arr = 0
+  CALL impureSub (a)
+  IF (ANY (arr /= a)) CALL abort ()
+
+CONTAINS
+
+  IMPURE ELEMENTAL FUNCTION accumulate (a, s)
+    INTEGER, INTENT(IN) :: a
+    INTEGER, INTENT(INOUT) :: s
+    INTEGER :: accumulate
+    
+    s = s + a
+    accumulate = s
+  END FUNCTION accumulate
+
+END PROGRAM main
+
+! { dg-final { cleanup-modules "m" } }