Tcl Source Code

2005-09-23  Don Porter  <[email protected]>

	[kennykb-numerics-branch]

	* generic/tclStrToD.c:	Memory leak.  Comment in TclSetBignumIntRep
	* generic/tclObj.c:	indicates that mp_init() is called on the
	bignumValue argument to clear it, while keeping the digits array
	transferred to the interp of the Tcl_Obj.  The implication is that
	callers of TclSetBignumIntRep() (and their callers) need not call
	mp_clear(), but can imagine they've transferred ownership of an
	mp_int value to Tcl.  However, mp_init() doesn't merely re-initialize
	the fields of an mp_int to hold the value zero.  It also allocates
	a fresh dp array of minimum size governed by MP_PREC.  Without a
	corresponding mp_clear() call somewhere, these dp arrays are leaked.
	Added some mp_clear() calls to fix the leak, but better fix strategies
	should still be pursued.  Perhaps the best approach is to just
	invade the mp_int struct and do the necessary surgery ourselves.

2005-09-20  Don Porter  <[email protected]>

	[kennykb-numerics-branch]
	
	* generic/tclExecute.c:	Revise TclIncrObj() to call
	Tcl_GetBignumAndClearObj.

 * Copyright (c) 1999 by Scriptics Corporation.
 * Copyright (c) 2001 by ActiveState Corporation.
 * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclObj.c,v 1.72.2.37 2005/09/23 04:03:43 dgp Exp $
 */

#include "tclInt.h"
#include "tommath.h"
#include <float.h>

#define BIGNUM_AUTO_NARROW 1

    }
  tooLargeForWide:
#endif
#endif
    TclInvalidateStringRep(objPtr);
    TclFreeIntRep(objPtr);
    TclSetBignumIntRep(objPtr, bignumValue);
    mp_clear(bignumValue);
}

void
TclSetBignumIntRep(objPtr, bignumValue)
    Tcl_Obj *objPtr;
    mp_int *bignumValue;
{

 *	interconversion among 'double' and 'mp_int' types.
 *
 * Copyright (c) 2005 by Kevin B. Kenny.  All rights reserved.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclStrToD.c,v 1.1.2.38 2005/09/23 04:03:43 dgp Exp $
 *
 *----------------------------------------------------------------------
 */

#include <tclInt.h>
#include <stdio.h>
#include <stdlib.h>

		}
	    }
	    if (octalSignificandOverflow) {
		if (signum) {
		    mp_neg(&octalSignificandBig, &octalSignificandBig);
		}
		TclSetBignumIntRep(objPtr, &octalSignificandBig);

	    }		
	    break;

	case ZERO:
	case DECIMAL:
	    significandOverflow =
		AccumulateDecimalDigit( 0, numTrailZeros-1,

		}
	    }
	    if (significandOverflow) {
		if (signum) {
		    mp_neg(&significandBig, &significandBig);
		}
		TclSetBignumIntRep(objPtr, &significandBig);

	    }
	    break;

	case FRACTION:
	case EXPONENT:

	    /*