Path: utzoo!telly!lethe!dptcdc!attcan!uunet!tut.cis.ohio-state.edu!YAHI.STANFORD.EDU!tiemann
From: tiemann@YAHI.STANFORD.EDU (Michael Tiemann)
Newsgroups: gnu.g++.bug
Subject: Ungracious exit for g++.
Message-ID: <8904080613.AA18484@yahi.stanford.edu>
Date: 8 Apr 89 06:13:13 GMT
References: <8903211537.AA27448@yahi.stanford.edu>
Sender: news@tut.cis.ohio-state.edu
Reply-To: tiemann@lurch.stanford.edu
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Lines: 31

This patch fixes a bug which kills the compiler in Gordon's memoizing
fib function.  Replace old code in cplus-cvt.c with this code:

static tree
build_type_conversion_1 (xtype, basetype, expr, typename, for_sure)
     tree xtype, basetype;
     tree expr;
     tree typename;
     int for_sure;
{
  tree first_arg = expr;
  tree rval;

  if (for_sure == 0 && ! lvalue_p (expr))
    first_arg = build (NOP_EXPR, TYPE_POINTER_TO (basetype), integer_zero_node);
  rval = build_method_call (first_arg, typename, NULL_TREE, 1, for_sure);
  if (rval == error_mark_node)
    {
      if (for_sure == 0)
	return NULL_TREE;
      return error_mark_node;
    }
  if (first_arg != expr)
    {
      expr = build_up_reference (build_reference_type (TREE_TYPE (expr), expr));
      TREE_VALUE (TREE_OPERAND (rval, 1)) = build_unary_op (ADDR_EXPR, expr, 0);
    }
  return convert (xtype, rval);
}

Michael