🚀 go-pugleaf

GDB 4.6's environ.c applies the memcpy routine to overlapping regions of
memory.  This isn't portable.  It should use memmove instead, but I suppose
that's too much of a pain to configure.  Here is a patch.

===================================================================
RCS file: environ.c,v
retrieving revision 4.6
diff -c -r4.6 environ.c
*** environ.c	1992/07/06 17:10:46	4.6
--- environ.c	1992/07/23 23:27:13
***************
*** 179,187 ****
  	&& s[len] == '=')
        {
  	free (s);
! 	memcpy (vector, vector + 1,
! 		(e->allocated - (vector - e->vector)) * sizeof (char *));
! 	e->vector[e->allocated - 1] = 0;
  	return;
        }
  }
--- 179,186 ----
  	&& s[len] == '=')
        {
  	free (s);
! 	while ((vector[0] = vector[1]) != NULL)
! 	  vector++;
  	return;
        }
  }