------- Comment #8 from sgk at troutmask dot apl dot washington dot edu 2008-10-28 15:03 ------- Subject: Re: gfortran error and ICE at automatic type conversion with transfer intrinsic
On Tue, Oct 28, 2008 at 02:36:07PM -0000, dominiq at lps dot ens dot fr wrote: > > > What does ... print? > > NaN on both ppc/intel-Darwin9. > > > My patch simply fixes the ICE in gfortran. > > I think the conversion of NaN to int is buggy since the behavior > is platform/option dependent. Your patch just prevents to reach > the bug. It always make me nervous when a bug is hidden without > being understood. i = NaN is an assignment not a bitwise copy. This isn't platform dependent nor option dependent. You simply can't assign a NaN to an INTEGER. In thinking about transfer(-1,1.0), this may also be invalid because the standard forbids calling an intrinsic procedure if it will return a result outside the representable range of the return type. There is probably some argument on whether NaN is this range. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37930
