------- Comment #9 from jv244 at cam dot ac dot uk 2010-02-21 14:11 ------- (In reply to comment #7) > (In reply to comment #3) > > This could be somewhat similar, I really wonder if this needs a temp: > > > > TYPE T1 > > INTEGER :: a(3) > > END TYPE T1 > > TYPE(T1), POINTER :: x,y > > ALLOCATE(x,y) > > x%a=y%a > > END > > I think one needs a temporary, cf. the following code: > > integer, pointer :: a(:),b(:) > allocate(a(3)) > a = [1,2,3] > b => a(3:1:-1) > a = b > print *, a > end > this is example is different, here a temp can not be avoided. It is different in that a and b have the pointer attribute, while x%a and x%b do not have the pointer attribute (only the parent structure). But still, the example in comment #3 seems tricky enough to defer optimization if you as me.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36933
