Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Message-ID: <3B891E23.9090407@ece.gatech.edu> Date: Sun, 26 Aug 2001 12:04:51 -0400 From: Charles Wilson User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2) Gecko/20010713 X-Accept-Language: en-us MIME-Version: 1.0 To: DJ Delorie CC: binutils@sources.redhat.com, cygwin@cygwin.com Subject: Re: [aida_s@mx12.freecom.ne.jp: A serious bug of "ld --enable-auto-import"] References: <3B8884F6.80708@ece.gatech.edu> <200108260530.BAA28221@envy.delorie.com> <3B888D76.6090102@ece.gatech.edu> <200108260613.CAA28557@envy.delorie.com> <3B891172.9000207@ece.gatech.edu> <200108261543.LAA06415@envy.delorie.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit DJ Delorie wrote: >>Here's what hello.o looks like when hello.c uses >>__declspec(dllimport) (and hwstr.c uses __declspec(dllexport)). >>Recall that this configuration works as expected. >> > > Right, because we're effectively telling gcc that hwstr1 is a pointer, > not an array. That changes how gcc generates code. Pointers must be > indexed at runtime, arrays may be indexed at compile time. Well, that's interesting. Since arrays ARE pointers(*), then perhaps it's enough to change gcc's behavior from "arrays may be indexed at compile time" -- and currently, ARE indexed at compile time to arrays indexed at runtime. (for pe-i386 targets) That leaves two questions: a) will it fix the observed problem b) will gcc accept it (Is there a gcc option to force runtime indexing of arrays?) --Chuck (*) okay, I'm C-biased. I'm not sure how a change of the type proposed here would affect C++, Fortran, Ada, Java, .... but turning OFF this optimization shouldn't break anything, should it? -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/