64 lines
1.3 KiB
Fortran
64 lines
1.3 KiB
Fortran
! { dg-do run }
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! { dg-options "-fcray-pointer" }
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!
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! Test the fix for PR36528 in which the Cray pointer was not passed
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! correctly to 'euler' so that an undefined reference to fcn was
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! generated by the linker.
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!
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! Reported by Tobias Burnus <burnus@gcc.gnu.org>
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! from http://groups.google.com/group/comp.lang.fortran/msg/86b65bad78e6af78
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!
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real function p1(x)
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real, intent(in) :: x
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p1 = x
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end
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real function euler(xp,xk,dx,f)
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real, intent(in) :: xp, xk, dx
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interface
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real function f(x)
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real, intent(in) :: x
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end function
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end interface
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real x, y
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y = 0.0
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x = xp
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do while (x .le. xk)
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y = y + f(x)*dx
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x = x + dx
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end do
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euler = y
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end
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program main
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interface
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real function p1 (x)
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real, intent(in) :: x
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end function
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real function fcn (x)
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real, intent(in) :: x
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end function
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real function euler (xp,xk,dx,f)
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real, intent(in) :: xp, xk ,dx
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interface
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real function f(x)
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real, intent(in) :: x
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end function
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end interface
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end function
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end interface
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real x, xp, xk, dx, y, z
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pointer (pfcn, fcn)
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pfcn = loc(p1)
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xp = 0.0
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xk = 1.0
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dx = 0.0005
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y = 0.0
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x = xp
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do while (x .le. xk)
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y = y + fcn(x)*dx
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x = x + dx
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end do
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z = euler(0.0,1.0,0.0005,fcn)
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if (abs (y - z) .gt. 1e-6) call abort
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end
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