if (newPtr == NULL) {
	return NULL;
    }
    memcpy(newPtr, ptr, copySize);
    Tcl_DbCkfree(ptr, file, line);
    return newPtr;
}


/*
 *----------------------------------------------------------------------
 *
 * Tcl_Alloc, et al. --
 *
 *	These functions are defined in terms of the debugging versions when

				 * added */
{
    TclInitDbCkalloc();
    Tcl_CreateObjCommand(interp, "memory", MemoryCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "checkmem", CheckmemCmd, NULL, NULL);
}


#else	/* TCL_MEM_DEBUG */

/* This is the !TCL_MEM_DEBUG case */

#undef Tcl_InitMemory
#undef Tcl_DumpActiveMemory
#undef Tcl_ValidateAllMemory


/*
 *----------------------------------------------------------------------
 *
 * Tcl_Alloc --
 *
 *	Interface to TclpAlloc when TCL_MEM_DEBUG is disabled. It does check

 *    Panics if memory of at least the requested size could not be
 *    allocated.
 *
 *------------------------------------------------------------------------
 */
void *
TclAllocElemsEx(
    Tcl_Size elemCount,     /* Allocation will store at least these many... */
    Tcl_Size elemSize,	    /* ...elements of this size */
    Tcl_Size leadSize,      /* Additional leading space in bytes */
    Tcl_Size *capacityPtr) /* OUTPUT: Actual capacity is stored
			       here if non-NULL. Only modified on success */
{
    void *ptr = TclAttemptReallocElemsEx(
	NULL, elemCount, elemSize, leadSize, capacityPtr);
    if (ptr == NULL) {
	Tcl_Panic("Failed to allocate %" TCL_SIZE_MODIFIER
		  "d elements of size %" TCL_SIZE_MODIFIER "d bytes.",
		  elemCount,

 *    Pointer to allocated memory block which is at least as large
 *    as the requested size or NULL if allocation failed.
 *
 *------------------------------------------------------------------------
 */
void *
TclAttemptReallocElemsEx(
    void *oldPtr,	    /* Pointer to memory block to reallocate or
			     * NULL to indicate this is a new allocation */
    Tcl_Size elemCount,     /* Allocation will store at least these many... */
    Tcl_Size elemSize,	    /* ...elements of this size */
    Tcl_Size leadSize,      /* Additional leading space in bytes */
    Tcl_Size *capacityPtr) /* OUTPUT: Actual capacity is stored
			       here if non-NULL. Only modified on success */
{
    void *ptr;
    Tcl_Size limit;
    Tcl_Size attempt;

    assert(elemCount > 0);
    assert(elemSize > 0);

 *    Panics if memory of at least the requested size could not be
 *    allocated.
 *
 *------------------------------------------------------------------------
 */
void *
TclReallocElemsEx(
    void *oldPtr,	    /* Pointer to memory block to reallocate */
    Tcl_Size elemCount,     /* Allocation will store at least these many... */
    Tcl_Size elemSize,	    /* ...elements of this size */
    Tcl_Size leadSize,      /* Additional leading space in bytes */
    Tcl_Size *capacityPtr) /* OUTPUT: Actual capacity is stored
			       here if non-NULL. Only modified on success */
{
    void *ptr = TclAttemptReallocElemsEx(
	oldPtr, elemCount, elemSize, leadSize, capacityPtr);
    if (ptr == NULL) {
	Tcl_Panic("Failed to reallocate %" TCL_SIZE_MODIFIER
		  "d elements of size %" TCL_SIZE_MODIFIER "d bytes.",
		  elemCount,