Initial checkin of GCC 4.9.0 from trunk (r208799).

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba

1 files changed, 85 insertions, 0 deletions

diff --git a/gcc-4.9/gcc/testsuite/gfortran.dg/elemental_optional_args_3.f90 b/gcc-4.9/gcc/testsuite/gfortran.dg/elemental_optional_args_3.f90
new file mode 100644
index 000000000..c1098b34e
--- /dev/null
+++ b/gcc-4.9/gcc/testsuite/gfortran.dg/elemental_optional_args_3.f90
@@ -0,0 +1,85 @@
+! { dg-do run }
+!
+! PR fortran/50981
+! The program used to dereference a NULL pointer when trying to access
+! a pointer dummy argument to be passed to an elemental subprocedure.
+!
+! Original testcase from Andriy Kostyuk <kostyuk@fias.uni-frankfurt.de>
+
+PROGRAM test
+  IMPLICIT NONE
+  REAL(KIND=8), DIMENSION(2) :: aa, rr
+  INTEGER, TARGET  :: c
+  INTEGER, POINTER :: b
+
+  aa(1)=10.
+  aa(2)=11.
+
+  b=>c
+  b=1
+
+  ! WRITE(*,*) 'Both f1 and ff work if the optional parameter is present:'
+
+  rr=f1(aa,b)
+  ! WRITE(*,*) ' rr(1)=', rr(1), '  rr(2)=', rr(2)
+  IF (ANY(rr /= (/ 110, 132 /))) CALL ABORT
+
+  rr=0
+  rr=ff(aa,b)
+  ! WRITE(*,*) ' rr(1)=', rr(1), '  rr(2)=', rr(2)
+  IF (ANY(rr /= (/ 110, 132 /))) CALL ABORT
+
+
+  b => NULL()
+  ! WRITE(*,*) 'But only f1 works if the optional parameter is absent:'
+
+  rr=0
+  rr=f1(aa, b)
+  ! WRITE(*,*) ' rr(1)=', rr(1), '  rr(2)=', rr(2)
+  IF (ANY(rr /= (/ 110, 132 /))) CALL ABORT
+
+  rr = 0
+  rr=ff(aa, b)
+  ! WRITE(*,*) ' rr(1)=', rr(1), '  rr(2)=', rr(2)
+  IF (ANY(rr /= (/ 110, 132 /))) CALL ABORT
+
+
+CONTAINS 
+
+    FUNCTION ff(a,b)
+      IMPLICIT NONE
+      REAL(KIND=8), INTENT(IN) :: a(:)
+      REAL(KIND=8), DIMENSION(SIZE(a)) :: ff
+      INTEGER, INTENT(IN), POINTER :: b
+      REAL(KIND=8), DIMENSION(2, SIZE(a)) :: ac
+      ac(1,:)=a
+      ac(2,:)=a**2
+      ff=SUM(gg(ac,b), dim=1)
+    END FUNCTION ff
+
+    FUNCTION f1(a,b)
+      IMPLICIT NONE
+      REAL(KIND=8), INTENT(IN) :: a(:)
+      REAL(KIND=8), DIMENSION(SIZE(a)) :: f1
+      INTEGER, INTENT(IN), POINTER :: b
+      REAL(KIND=8), DIMENSION(2, SIZE(a)) :: ac
+      ac(1,:)=a
+      ac(2,:)=a**2
+      f1=gg(ac(1,:),b)+gg(ac(2,:),b) ! This is the same as in ff, but without using the elemental feature of gg
+    END FUNCTION f1
+
+    ELEMENTAL REAL(KIND=8) FUNCTION gg(a,b)
+      IMPLICIT NONE
+      REAL(KIND=8), INTENT(IN) :: a
+      INTEGER, INTENT(IN), OPTIONAL :: b
+      INTEGER ::b1
+      IF(PRESENT(b)) THEN
+        b1=b
+      ELSE
+        b1=1
+      ENDIF
+      gg=a**b1
+    END FUNCTION gg
+
+
+END PROGRAM test