🚀 go-pugleaf

I've now got the latest libg++ and g++ up and running successfully on
the Sun 4, Sun 3, and Sequent Symmetry.  If anyone has any baffling
problems you can send me a note.

Also, for your hacking enjoyment, here is some sample exception handling
code.  To compile this type

% g++ -fhandle-exceptions foo.cc

Then type

% a.out m; a.out l

The example is rather contrived, but it illustrates some basic
syntactic and semantics points.

Please note that this new exception handling feature is experimental
and subject to change.

Doug
----------------------------------------
#include <stdio.h>
#include <setjmp.h>

class Search
{
private:
  char *buf;

public:
  exception { char item;} NOT_FOUND;

  Search (char *s) { buf = s; printf ("search buffer = %s\n", s); }

  int operator () (char c)
    {
      int i;
      for (i = 0; buf[i]; i++)
        if (buf[i] == c)
          return i;
      raise NOT_FOUND (c);
    }

  ~Search () { printf ("I should get printed regardless...\n"); }
};

main (int argc, char **argv)
{
  if (argc != 2)
    {
      printf ("usage: %s letter\n", argv[0]);
      exit (1);
    }
  else
    {
      Search search ("jammer");

      try
        {
          printf ("item found in location %d!\n", search (*argv[1]));
        }
      except search_item
        {
          Search::NOT_FOUND
            {
              printf ("item %c not found...\n", search_item.item);
            }
        }
    }
}
--
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