diff options
Diffstat (limited to 'gcc/testsuite/gfortran.dg/cray_pointers_8.f90')
-rw-r--r-- | gcc/testsuite/gfortran.dg/cray_pointers_8.f90 | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/cray_pointers_8.f90 b/gcc/testsuite/gfortran.dg/cray_pointers_8.f90 new file mode 100644 index 000000000..887c9625a --- /dev/null +++ b/gcc/testsuite/gfortran.dg/cray_pointers_8.f90 @@ -0,0 +1,63 @@ +! { dg-do run } +! { dg-options "-fcray-pointer" } +! +! Test the fix for PR36528 in which the Cray pointer was not passed +! correctly to 'euler' so that an undefined reference to fcn was +! generated by the linker. +! +! Reported by Tobias Burnus <burnus@gcc.gnu.org> +! from http://groups.google.com/group/comp.lang.fortran/msg/86b65bad78e6af78 +! +real function p1(x) + real, intent(in) :: x + p1 = x +end + +real function euler(xp,xk,dx,f) + real, intent(in) :: xp, xk, dx + interface + real function f(x) + real, intent(in) :: x + end function + end interface + real x, y + y = 0.0 + x = xp + do while (x .le. xk) + y = y + f(x)*dx + x = x + dx + end do + euler = y +end +program main + interface + real function p1 (x) + real, intent(in) :: x + end function + real function fcn (x) + real, intent(in) :: x + end function + real function euler (xp,xk,dx,f) + real, intent(in) :: xp, xk ,dx + interface + real function f(x) + real, intent(in) :: x + end function + end interface + end function + end interface + real x, xp, xk, dx, y, z + pointer (pfcn, fcn) + pfcn = loc(p1) + xp = 0.0 + xk = 1.0 + dx = 0.0005 + y = 0.0 + x = xp + do while (x .le. xk) + y = y + fcn(x)*dx + x = x + dx + end do + z = euler(0.0,1.0,0.0005,fcn) + if (abs (y - z) .gt. 1e-6) call abort +end |