------- Comment #17 from sgk at troutmask dot apl dot washington dot edu 2009-11-17 06:03 ------- Subject: Re: [4.5/4.4 Regression] data statement with nested type constructors
On Tue, Nov 17, 2009 at 05:35:33AM -0000, jvdelisle at gcc dot gnu dot org wrote: > >- Comment #16 from jvdelisle at gcc dot gnu dot org 2009-11-17 05:35 ------- > I propose fixing this at gfc_consant_ac which has the following comment: > > /* Given an array constructor, determine if the constructor is > constant or not by expanding it and making sure that all elements > are constants. This is a bit of a hack since something like (/ (i, > i=1,100000000) /) will take a while as* opposed to a more clever > function that traverses the expression tree. FIXME. */ > > We should just be able to traverse the expression tree. I have > manually done so with a few test cases and one does indeed end up > with a BT_CONSTANT. I will see what I can come up with. > Be careful, if I remember correctly, this can be an O(n**2) problem. OTOH, nice sleuthing! -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41807
