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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gfortran.dg/actual_array_substr_2.f90
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+! { dg-do run }
+! Tests the fix for pr28174, in which the fix for pr28118 was
+! corrupting the character lengths of arrays that shared a
+! character length structure. In addition, in developing the
+! fix, it was noted that intent(out/inout) arguments were not
+! getting written back to the calling scope.
+!
+! Based on the testscase by Harald Anlauf <anlauf@gmx.de>
+!
+program pr28174
+ implicit none
+ character(len=12) :: teststring(2) = (/ "abc def ghij", &
+ "klm nop qrst" /)
+ character(len=12) :: a(2), b(2), c(2), d(2)
+ integer :: m = 7, n
+ a = teststring
+ b = a
+ c = a
+ d = a
+ n = m - 4
+
+! Make sure that variable substring references work.
+ call foo (a(:)(m:m+5), c(:)(n:m+2), d(:)(5:9))
+ if (any (a .ne. teststring)) call abort ()
+ if (any (b .ne. teststring)) call abort ()
+ if (any (c .ne. (/"ab456789#hij", &
+ "kl7654321rst"/))) call abort ()
+ if (any (d .ne. (/"abc 23456hij", &
+ "klm 98765rst"/))) call abort ()
+contains
+ subroutine foo (w, x, y)
+ character(len=*), intent(in) :: w(:)
+ character(len=*), intent(inOUT) :: x(:)
+ character(len=*), intent(OUT) :: y(:)
+ character(len=12) :: foostring(2) = (/"0123456789#$" , &
+ "$#9876543210"/)
+! This next is not required by the standard but tests the
+! functioning of the gfortran implementation.
+! if (all (x(:)(3:7) .eq. y)) call abort ()
+ x = foostring (:)(5 : 4 + len (x))
+ y = foostring (:)(3 : 2 + len (y))
+ end subroutine foo
+end program pr28174
+