[Gc] Win64 GCC supprt

Andrew Haley aph at redhat.com
Thu Jun 18 13:14:41 PDT 2009


NightStrike wrote:
> Hello,
> 
> I am an admin of the mingw-w64.sf.net project.  We have ported GCC to
> Win64 along with all of the required parts.  We are now on to get all
> the languages worked.  So far, the only remaining two are ada and
> java.  Java for GCC requires, among other things, boehm-gc.  That is
> now next in the list of things to get working.  Is there anyone here
> that can help out with this?
> 
> Working off of HEAD, I can see two initial problems.  First, this from gc.h:
> 
> /* Define word and signed_word to be unsigned and signed types of the   */
> /* size as char * or void *.  There seems to be no way to do this       */
> /* even semi-portably.  The following is probably no better/worse       */
> /* than almost anything else.                                           */
> /* The ANSI standard suggests that size_t and ptrdiff_t might be        */
> /* better choices.  But those had incorrect definitions on some older   */
> /* systems.  Notably "typedef int size_t" is WRONG.                     */
> 
> 
> The type you want is intptr_t from inttypes.h

In a perfect world that might be true.

> Second, compiling yields this failure:
> 
> ../mallocx.c:32:1: error: initializer element is not constant
> ../mallocx.c:33:1: error: initializer element is not constant
> ../mallocx.c:34:1: error: initializer element is not constant
> ../mallocx.c:36:5: error: initializer element is not constant
> 
> 
> It appears that certain things are being initialized by variables, and
> this is not AFAIK supported.

Can you expand that with gcc -E ?  Then we'll see what's wrong with the
initializer.

Andrew.


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