Re: [Sbcl-devel] patch for OS X 10.3 Panther G5

[John K. <jk2...@ya...>]

--- Julian Squires <te...@wi...> wrote:
> Hmm.  I've tried building twice with this change, a second time to make
> sure I didn't mess something up, and it still failed.  I'm using gcc 3.3
> on a 10.2.8 box.  So far, the only way to get a correct build for me is
> by including SB-LDB.  Maybe it's some kind of alignment issue, and
> that's why this works for you and Vipul but not me?  I suppose one could
> try replacing it with something similarly useless?

OK.  I've tried the following (with sh clean.sh between every compilation)

 1) compile as-is  0.8.10 on OS X 10.3 gcc 3.3
    => BUILD-FAILS (cold-sbcl.core, but no sbcl.core)

 2) compile inserting 
    #ifdef LISP_FEATURE_DARWIN
        sigreturn(context);
    #endif
    in ppc-arch.c at end of :default case in sigtrap_handler()
   => BUILD SUCCEEDS

 3) put a function 
    int donothing(int j)  
    {
      if (j==666) lose("this should not happen");
      return 0;
    }
   just before sigtrap_handler in ppc-arch.c,
   and replace the call to sigreturn with donothing(99)
   => BUILD SUCCEEDS

 4) comment out call to donothing, but leave the function defintion of
    donothing in.
  => BUILD SUCCEEDS (!) 

 5) comment out the function definition of donothing to bring us back 
    to original state, plus some commented out code.
  => BUILD FAILS


So it looks like you might be right and it could be an alignment issue.



	
		
__________________________________
Do you Yahoo!?
Win a $20,000 Career Makeover at Yahoo! HotJobs  
http://hotjobs.sweepstakes.yahoo.com/careermakeover