Tcl Source Code

declare 642 {
    void Tcl_DecrRefCount(Tcl_Obj *objPtr)
}

declare 643 {
    int Tcl_IsShared(Tcl_Obj *objPtr)
}

# TIP#312 New Tcl_LinkArray() function
declare 644 {
    int Tcl_LinkArray(Tcl_Interp *interp, const char *varName, void *addr,
	    int type, int size)
}

# ----- BASELINE -- FOR -- 8.7.0 ----- #

##############################################################################

# Define the platform specific public Tcl interface. These functions are only
# available on the designated platform.

#define TCL_LINK_ULONG		((sizeof(long) != sizeof(int)) ? TCL_LINK_WIDE_UINT : TCL_LINK_UINT)
#else
#define TCL_LINK_LONG		11
#define TCL_LINK_ULONG		12
#endif
#define TCL_LINK_FLOAT		13
#define TCL_LINK_WIDE_UINT	14
#define TCL_LINK_CHARS		15
#define TCL_LINK_BINARY		16
#define TCL_LINK_READ_ONLY	0x80

/*
 *----------------------------------------------------------------------------
 * Forward declarations of Tcl_HashTable and related types.
 */

EXTERN int		Tcl_HasStringRep(Tcl_Obj *objPtr);
/* 641 */
EXTERN void		Tcl_IncrRefCount(Tcl_Obj *objPtr);
/* 642 */
EXTERN void		Tcl_DecrRefCount(Tcl_Obj *objPtr);
/* 643 */
EXTERN int		Tcl_IsShared(Tcl_Obj *objPtr);
/* 644 */
EXTERN int		Tcl_LinkArray(Tcl_Interp *interp,
				const char *varName, void *addr, int type,
				int size);

typedef struct {
    const struct TclPlatStubs *tclPlatStubs;
    const struct TclIntStubs *tclIntStubs;
    const struct TclIntPlatStubs *tclIntPlatStubs;
} TclStubHooks;

    char * (*tcl_InitStringRep) (Tcl_Obj *objPtr, const char *bytes, unsigned int numBytes); /* 637 */
    Tcl_ObjIntRep * (*tcl_FetchIntRep) (Tcl_Obj *objPtr, const Tcl_ObjType *typePtr); /* 638 */
    void (*tcl_StoreIntRep) (Tcl_Obj *objPtr, const Tcl_ObjType *typePtr, const Tcl_ObjIntRep *irPtr); /* 639 */
    int (*tcl_HasStringRep) (Tcl_Obj *objPtr); /* 640 */
    void (*tcl_IncrRefCount) (Tcl_Obj *objPtr); /* 641 */
    void (*tcl_DecrRefCount) (Tcl_Obj *objPtr); /* 642 */
    int (*tcl_IsShared) (Tcl_Obj *objPtr); /* 643 */
    int (*tcl_LinkArray) (Tcl_Interp *interp, const char *varName, void *addr, int type, int size); /* 644 */
} TclStubs;

extern const TclStubs *tclStubsPtr;

#ifdef __cplusplus
}
#endif

	(tclStubsPtr->tcl_HasStringRep) /* 640 */
#define Tcl_IncrRefCount \
	(tclStubsPtr->tcl_IncrRefCount) /* 641 */
#define Tcl_DecrRefCount \
	(tclStubsPtr->tcl_DecrRefCount) /* 642 */
#define Tcl_IsShared \
	(tclStubsPtr->tcl_IsShared) /* 643 */
#define Tcl_LinkArray \
	(tclStubsPtr->tcl_LinkArray) /* 644 */

#endif /* defined(USE_TCL_STUBS) */

/* !END!: Do not edit above this line. */

#if defined(USE_TCL_STUBS)
#   undef Tcl_CreateInterp

/*
 * tclLink.c --
 *
 *	This file implements linked variables (a C variable that is tied to a
 *	Tcl variable). The idea of linked variables was first suggested by
 *	Andreas Stolcke and this implementation is based heavily on a
 *	prototype implementation provided by him.
 *
 * Copyright (c) 1993 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 * Copyright (c) 2008 Rene Zaumseil
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tclInt.h"
#include <math.h>

/*
 * For each linked variable there is a data structure of the following type,
 * which describes the link and is the clientData for the trace set on the Tcl
 * variable.
 */

typedef struct Link {
    Tcl_Interp *interp;		/* Interpreter containing Tcl variable. */
    Tcl_Obj *varName;		/* Name of variable (must be global). This is
				 * needed during trace callbacks, since the
				 * actual variable may be aliased at that time
				 * via upvar. */
    char *addr;			/* Location of C variable. */
    int bytes;			/* Size of C variable array. This is 0 when
				 * single variables, and >0 used for array
				 * variables */
    int type;			/* Type of link (TCL_LINK_INT, etc.). */
    union {
	char c;
	unsigned char uc;
	int i;
	unsigned int ui;
	short s;
	unsigned short us;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
	long l;
	unsigned long ul;
#endif
	Tcl_WideInt w;
	Tcl_WideUInt uw;
	float f;
	double d;
	void *aryPtr;
	char *pc;
	unsigned char *puc;
	int *pi;
	unsigned int *pui;
	short *ps;
	unsigned short *pus;
	long *pl;
	unsigned long *pul;
	Tcl_WideInt *pw;
	Tcl_WideUInt *puw;
	float *pf;
	double *pd;
    } lastValue;		/* Last known value of C variable; used to
				 * avoid string conversions. */
    int flags;			/* Miscellaneous one-bit values; see below for
				 * definitions. */
} Link;

/*
 * Definitions for flag bits:
 * LINK_READ_ONLY -		1 means errors should be generated if Tcl
 *				script attempts to write variable.
 * LINK_BEING_UPDATED -		1 means that a call to Tcl_UpdateLinkedVar is
 *				in progress for this variable, so trace
 *				callbacks on the variable should be ignored.
 * LINK_ALLOC_ADDR -		1 means linkPtr->addr was allocated on the
 *				heap.
 * LINK_ALLOC_LAST -		1 means linkPtr->valueLast.p was allocated on
 *				the heap.
 */

#define LINK_READ_ONLY		1
#define LINK_BEING_UPDATED	2
#define LINK_ALLOC_ADDR		4
#define LINK_ALLOC_LAST		8

/*
 * Forward references to functions defined later in this file:
 */

static char *		LinkTraceProc(ClientData clientData,Tcl_Interp *interp,
			    const char *name1, const char *name2, int flags);
static Tcl_Obj *	ObjValue(Link *linkPtr);
static void		LinkFree(Link *linkPtr);
static int		GetInvalidIntFromObj(Tcl_Obj *objPtr, int *intPtr);
static int		GetInvalidWideFromObj(Tcl_Obj *objPtr,
			    Tcl_WideInt *widePtr);
static int		GetInvalidDoubleFromObj(Tcl_Obj *objPtr,
			    double *doublePtr);

/*
 * Convenience macro for accessing the value of the C variable pointed to by a
 * link. Note that this macro produces something that may be regarded as an
 * lvalue or rvalue; it may be assigned to as well as read. Also note that
 * this macro assumes the name of the variable being accessed (linkPtr); this
 * is not strictly a good thing, but it keeps the code much shorter and

    }
#endif
    if (type & TCL_LINK_READ_ONLY) {
	linkPtr->flags = LINK_READ_ONLY;
    } else {
	linkPtr->flags = 0;
    }
    linkPtr->bytes = 0;
    objPtr = ObjValue(linkPtr);
    if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
	return TCL_ERROR;
    }
    code = Tcl_TraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    if (code != TCL_OK) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
    }
    return code;
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_LinkArray --
 *
 *	Link a C variable array to a Tcl variable so that changes to either
 *	one causes the other to change.
 *
 * Results:
 *	The return value is TCL_OK if everything went well or TCL_ERROR if an
 *	error occurred (the interp's result is also set after errors).
 *
 * Side effects:
 *	The value at *addr is linked to the Tcl variable "varName", using
 *	"type" to convert between string values for Tcl and binary values for
 *	*addr.
 *
 *----------------------------------------------------------------------
 */

int
Tcl_LinkArray(
    Tcl_Interp *interp,		/* Interpreter in which varName exists. */
    const char *varName,	/* Name of a global variable in interp. */
    void *addr,			/* Address of a C variable to be linked to
				 * varName. If NULL then the necessary space
				 * will be allocated and returned as the
				 * interpreter result. */
    int type,			/* Type of C variable: TCL_LINK_INT, etc. Also
				 * may have TCL_LINK_READ_ONLY and
				 * TCL_LINK_ALLOC OR'ed in. */
    int size)			/* Size of C variable array, >1 if array */
{
    Tcl_Obj *objPtr;
    Link *linkPtr;
    int code;

    if (size < 1) {
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"wrong array size given", -1));
	return TCL_ERROR;
    }

    linkPtr = ckalloc(sizeof(Link));
    linkPtr->type = type & ~TCL_LINK_READ_ONLY;
    if (type & TCL_LINK_READ_ONLY) {
	linkPtr->flags = LINK_READ_ONLY;
    } else {
	linkPtr->flags = 0;
    }

    switch (linkPtr->type) {
    case TCL_LINK_INT:
    case TCL_LINK_BOOLEAN:
	linkPtr->bytes = size * sizeof(int);
	break;
    case TCL_LINK_DOUBLE:
	linkPtr->bytes = size * sizeof(double);
	break;
    case TCL_LINK_WIDE_INT:
	linkPtr->bytes = size * sizeof(Tcl_WideInt);
	break;
    case TCL_LINK_WIDE_UINT:
	linkPtr->bytes = size * sizeof(Tcl_WideUInt);
	break;
    case TCL_LINK_CHAR:
	linkPtr->bytes = size * sizeof(char);
	break;
    case TCL_LINK_UCHAR:
	linkPtr->bytes = size * sizeof(unsigned char);
	break;
    case TCL_LINK_SHORT:
	linkPtr->bytes = size * sizeof(short);
	break;
    case TCL_LINK_USHORT:
	linkPtr->bytes = size * sizeof(unsigned short);
	break;
    case TCL_LINK_UINT:
	linkPtr->bytes = size * sizeof(unsigned int);
	break;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	linkPtr->bytes = size * sizeof(long);
	break;
    case TCL_LINK_ULONG:
	linkPtr->bytes = size * sizeof(unsigned long);
	break;
#endif
    case TCL_LINK_FLOAT:
	linkPtr->bytes = size * sizeof(float);
	break;
    case TCL_LINK_STRING:
	linkPtr->bytes = size * sizeof(char);
	size = 1;		/* This is a variable length string, no need
				 * to check last value. */

	/*
	 * If no address is given create one and use as address the
         * not needed linkPtr->lastValue
	 */

	if (addr == NULL) {
	    linkPtr->lastValue.aryPtr = ckalloc(linkPtr->bytes);
	    linkPtr->flags |= LINK_ALLOC_LAST;
	    addr = (char *) &linkPtr->lastValue.pc;
	}
	break;
    case TCL_LINK_CHARS:
    case TCL_LINK_BINARY:
	linkPtr->bytes = size * sizeof(char);
	break;
    default:
	LinkFree(linkPtr);
	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"bad linked array variable type", -1));
	return TCL_ERROR;
    }

    /*
     * Allocate C variable space in case no address is given
     */

    if (addr == NULL) {
	linkPtr->addr = ckalloc(linkPtr->bytes);
	linkPtr->flags |= LINK_ALLOC_ADDR;
    } else {
	linkPtr->addr = addr;
    }

    /*
     * If necessary create space for last used value.
     */

    if (size > 1) {
	linkPtr->lastValue.aryPtr = ckalloc(linkPtr->bytes);
	linkPtr->flags |= LINK_ALLOC_LAST;
    }

    /*
     * Set common structure values.
     */

    linkPtr->interp = interp;
    linkPtr->varName = Tcl_NewStringObj(varName, -1);
    Tcl_IncrRefCount(linkPtr->varName);
    objPtr = ObjValue(linkPtr);
    if (Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, objPtr,
	    TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
	return TCL_ERROR;
    }

    code = Tcl_TraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    if (code != TCL_OK) {
	Tcl_DecrRefCount(linkPtr->varName);
	LinkFree(linkPtr);
    } else {
	Tcl_SetObjResult(interp, Tcl_NewIntObj((int) linkPtr->addr));
    }
    return code;
}

/*
 *----------------------------------------------------------------------
 *

    if (linkPtr == NULL) {
	return;
    }
    Tcl_UntraceVar2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
	    LinkTraceProc, linkPtr);
    Tcl_DecrRefCount(linkPtr->varName);
    LinkFree(linkPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * Tcl_UpdateLinkedVar --
 *

     */
    linkPtr = (Link *) Tcl_VarTraceInfo2(interp, varName, NULL,
	    TCL_GLOBAL_ONLY, LinkTraceProc, NULL);
    if (linkPtr != NULL) {
	linkPtr->flags = (linkPtr->flags & ~LINK_BEING_UPDATED) | savedFlag;
    }
}

static inline int
GetInt(
    Tcl_Obj *objPtr,
    int *intPtr)
{
    return (Tcl_GetIntFromObj(NULL, objPtr, intPtr) != TCL_OK
	    && GetInvalidIntFromObj(objPtr, intPtr) != TCL_OK);
}

static inline int
GetWide(
    Tcl_Obj *objPtr,
    Tcl_WideInt *widePtr)
{
    return (Tcl_GetWideIntFromObj(NULL, objPtr, widePtr) != TCL_OK
	    && GetInvalidWideFromObj(objPtr, widePtr) != TCL_OK);
}

static inline int
GetDouble(
    Tcl_Obj *objPtr,
    double *dblPtr)
{
    if (Tcl_GetDoubleFromObj(NULL, objPtr, dblPtr) == TCL_OK) {
	return 0;
    } else {
#ifdef ACCEPT_NAN
	Tcl_ObjIntRep *irPtr = TclFetchIntRep(objPtr, &tclDoubleType);

	if (irPtr != NULL) {
	    *dblPtr = irPtr->doubleValue;
	    return 0;
	}
#endif
	return GetInvalidDoubleFromObj(objPtr, dblPtr) != TCL_OK;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * LinkTraceProc --
 *
 *	This function is invoked when a linked Tcl variable is read, written,

    Tcl_Interp *interp,		/* Interpreter containing Tcl variable. */
    const char *name1,		/* First part of variable name. */
    const char *name2,		/* Second part of variable name. */
    int flags)			/* Miscellaneous additional information. */
{
    Link *linkPtr = clientData;
    int changed;
    int valueLength;
    const char *value;
    char **pp;
    Tcl_Obj *valueObj;
    int valueInt;
    Tcl_WideInt valueWide;
    double valueDouble;
    int objc;
    Tcl_Obj **objv;
    int i;

    /*
     * If the variable is being unset, then just re-create it (with a trace)
     * unless the whole interpreter is going away.
     */

    if (flags & TCL_TRACE_UNSETS) {
	if (Tcl_InterpDeleted(interp)) {
	    Tcl_DecrRefCount(linkPtr->varName);
	    LinkFree(linkPtr);
	} else if (flags & TCL_TRACE_DESTROYED) {
	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
		    TCL_GLOBAL_ONLY);
	    Tcl_TraceVar2(interp, Tcl_GetString(linkPtr->varName), NULL,
		    TCL_GLOBAL_ONLY|TCL_TRACE_READS|TCL_TRACE_WRITES
		    |TCL_TRACE_UNSETS, LinkTraceProc, linkPtr);
	}

    /*
     * For read accesses, update the Tcl variable if the C variable has
     * changed since the last time we updated the Tcl variable.
     */

    if (flags & TCL_TRACE_READS) {
	/*
	 * Variable arrays
	 */

	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    changed = memcmp(linkPtr->addr, linkPtr->lastValue.aryPtr,
		    linkPtr->bytes);
	} else {
	    /* single variables */
	    switch (linkPtr->type) {
	    case TCL_LINK_INT:
	    case TCL_LINK_BOOLEAN:
		changed = (LinkedVar(int) != linkPtr->lastValue.i);
		break;
	    case TCL_LINK_DOUBLE:
		changed = (LinkedVar(double) != linkPtr->lastValue.d);
		break;
	    case TCL_LINK_WIDE_INT:
		changed = (LinkedVar(Tcl_WideInt) != linkPtr->lastValue.w);
		break;
	    case TCL_LINK_WIDE_UINT:
		changed = (LinkedVar(Tcl_WideUInt) != linkPtr->lastValue.uw);
		break;
	    case TCL_LINK_CHAR:
		changed = (LinkedVar(char) != linkPtr->lastValue.c);
		break;
	    case TCL_LINK_UCHAR:
		changed = (LinkedVar(unsigned char) != linkPtr->lastValue.uc);
		break;
	    case TCL_LINK_SHORT:
		changed = (LinkedVar(short) != linkPtr->lastValue.s);
		break;
	    case TCL_LINK_USHORT:
		changed = (LinkedVar(unsigned short) != linkPtr->lastValue.us);
		break;
	    case TCL_LINK_UINT:
		changed = (LinkedVar(unsigned int) != linkPtr->lastValue.ui);
		break;
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
	    case TCL_LINK_LONG:
		changed = (LinkedVar(long) != linkPtr->lastValue.l);
		break;
	    case TCL_LINK_ULONG:
		changed = (LinkedVar(unsigned long) != linkPtr->lastValue.ul);
		break;
#endif
	    case TCL_LINK_FLOAT:
		changed = (LinkedVar(float) != linkPtr->lastValue.f);
		break;
	    case TCL_LINK_STRING:
	    case TCL_LINK_CHARS:
	    case TCL_LINK_BINARY:
		changed = 1;
		break;
	    default:
		changed = 0;
		/* return (char *) "internal error: bad linked variable type"; */
	    }
	}
	if (changed) {
	    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL, ObjValue(linkPtr),
		    TCL_GLOBAL_ONLY);
	}
	return NULL;
    }

	/*
	 * This shouldn't ever happen.
	 */

	return (char *) "internal error: linked variable couldn't be read";
    }

    /*
     * A couple of helper macros. 
     */

#define CheckHaveList(valueObj, underlyingType)				\
    if (Tcl_ListObjGetElements(NULL, (valueObj), &objc, &objv) == TCL_ERROR \
	    || objc != linkPtr->bytes / sizeof(underlyingType)) { \
	return (char *) "wrong dimension";			  \
    }
#define InRange(lowerLimit, value, upperLimit)	\
    ((value) >= (lowerLimit) && (value) <= (upperLimit))

    switch (linkPtr->type) {
    case TCL_LINK_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, int);
	    for (i=0; i < objc; i++) {
		int *varPtr = &linkPtr->lastValue.pi[i];

		if (GetInt(objv[i], varPtr)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have integer values";
		}
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    int *varPtr = &linkPtr->lastValue.i;

	    if (GetInt(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have integer value";
	    }
	    LinkedVar(int) = *varPtr;
	}
	break;

    case TCL_LINK_WIDE_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, Tcl_WideInt);
	    for (i=0; i < objc; i++) {
		Tcl_WideInt *varPtr = &linkPtr->lastValue.pw[i];

		if (GetWide(objv[i], varPtr)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *)
			    "variable array must have wide integer value";
		}
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    Tcl_WideInt *varPtr = &linkPtr->lastValue.w;

	    if (GetWide(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have wide integer value";
	    }
	    LinkedVar(Tcl_WideInt) = *varPtr;
	}
	break;

    case TCL_LINK_DOUBLE:
	if (linkPtr->flags & LINK_ALLOC_LAST) {

	    CheckHaveList(valueObj, double);
	    for (i=0; i < objc; i++) {

		if (GetDouble(objv[i], &linkPtr->lastValue.pd[i])) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *) "variable array must have real value";
		}

	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    double *varPtr = &linkPtr->lastValue.d;

	    if (GetDouble(valueObj, varPtr)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have real value";
	    }
	    LinkedVar(double) = *varPtr;
	}
	break;

    case TCL_LINK_BOOLEAN:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, int);
	    for (i=0; i < objc; i++) {
		int *varPtr = &linkPtr->lastValue.pi[i];

		if (Tcl_GetBooleanFromObj(NULL, objv[i], varPtr) != TCL_OK) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have boolean value";
		}
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    int *varPtr = &linkPtr->lastValue.i;

	    if (Tcl_GetBooleanFromObj(NULL, valueObj, varPtr) != TCL_OK) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have boolean value";
	    }
	    LinkedVar(int) = *varPtr;
	}
	break;

    case TCL_LINK_CHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, char);
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(SCHAR_MIN, valueInt, SCHAR_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have char value";
		}
		linkPtr->lastValue.pc[i] = (char) valueInt;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	    break;
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(SCHAR_MIN, valueInt, SCHAR_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have char value";
	    }
	    LinkedVar(char) = linkPtr->lastValue.c = (char) valueInt;
	}
	break;

    case TCL_LINK_UCHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, unsigned char);
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(0, valueInt, UCHAR_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		    return (char *)
			    "variable array must have unsigned char value";
		}
		linkPtr->lastValue.puc[i] = (unsigned char) valueInt;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(0, valueInt, UCHAR_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned char value";
	    }
	    LinkedVar(unsigned char) = linkPtr->lastValue.uc =
		    (unsigned char) valueInt;
	}
	break;

    case TCL_LINK_SHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, short);
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
			|| !InRange(SHRT_MIN, valueInt, SHRT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have short value";
		}
		linkPtr->lastValue.ps[i] = (short) valueInt;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(SHRT_MIN, valueInt, SHRT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have short value";
	    }
	    LinkedVar(short) = linkPtr->lastValue.s = (short) valueInt;
	}
	break;

    case TCL_LINK_USHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, unsigned short);
	    for (i=0; i < objc; i++) {
		if (GetInt(objv[i], &valueInt)
		        || !InRange(0, valueInt, USHRT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			"variable array must have unsigned short value";
		}
		linkPtr->lastValue.pus[i] = (unsigned short) valueInt;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetInt(valueObj, &valueInt)
		    || !InRange(0, valueInt, USHRT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned short value";
	    }
	    LinkedVar(unsigned short) = linkPtr->lastValue.us =
		    (unsigned short) valueInt;
	}
	break;

    case TCL_LINK_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, unsigned int);
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)
			|| !InRange(0, valueWide, UINT_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned int value";
		}
		linkPtr->lastValue.pui[i] = (unsigned int) valueWide;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetWide(valueObj, &valueWide)
		    || !InRange(0, valueWide, UINT_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned int value";
	    }
	    LinkedVar(unsigned int) = linkPtr->lastValue.ui =
		    (unsigned int) valueWide;
	}
	break;

#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, long);
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)
			|| !InRange(LONG_MIN, valueWide, LONG_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have long value";
		}
		linkPtr->lastValue.pl[i] = (long) valueWide;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	    break;
	} else {
	    if (GetWide(valueObj, &valueWide)
		    || !InRange(LONG_MIN, valueWide, LONG_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have long value";
	    }
	    LinkedVar(long) = linkPtr->lastValue.l = (long) valueWide;
	}
	break;

    case TCL_LINK_ULONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, unsigned long);
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)
			|| !InRange(0, valueWide, ULONG_MAX)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned long value";
		}
		linkPtr->lastValue.pul[i] = (unsigned long) valueWide;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetWide(valueObj, &valueWide)
		    || !InRange(0, valueWide, ULONG_MAX)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned long value";
	    }
	    LinkedVar(unsigned long) = linkPtr->lastValue.ul =
		    (unsigned long) valueWide;
	}
	break;
#endif

    case TCL_LINK_WIDE_UINT:
	/*
	 * FIXME: represent as a bignum.
	 */
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, Tcl_WideUInt);
	    for (i=0; i < objc; i++) {
		if (GetWide(objv[i], &valueWide)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *)
			    "variable array must have unsigned wide int value";
		}
		linkPtr->lastValue.puw[i] = (Tcl_WideUInt) valueWide;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetWide(valueObj, &valueWide)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have unsigned wide int value";
	    }
	    LinkedVar(Tcl_WideUInt) = linkPtr->lastValue.uw =
		    (Tcl_WideUInt) valueWide;
	}
	break;

    case TCL_LINK_FLOAT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    CheckHaveList(valueObj, float);
	    for (i=0; i < objc; i++) {
		if (GetDouble(objv[i], &valueDouble)
			&& !InRange(FLT_MIN, valueDouble, FLT_MAX)
		        && !TclIsInfinite(valueDouble)
			&& !TclIsNaN(valueDouble)) {
		    Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			    ObjValue(linkPtr), TCL_GLOBAL_ONLY);
	            return (char *) "variable array must have float value";
		}
		linkPtr->lastValue.pf[i] = (float) valueDouble;
	    }
	    memcpy(linkPtr->addr, linkPtr->lastValue.aryPtr, linkPtr->bytes);
	} else {
	    if (GetDouble(valueObj, &valueDouble)
		    && !InRange(FLT_MIN, valueDouble, FLT_MAX)
		    && !TclIsInfinite(valueDouble) && !TclIsNaN(valueDouble)) {
		Tcl_ObjSetVar2(interp, linkPtr->varName, NULL,
			ObjValue(linkPtr), TCL_GLOBAL_ONLY);
		return (char *) "variable must have float value";
	    }
	    LinkedVar(float) = linkPtr->lastValue.f = (float) valueDouble;
	}
	break;

    case TCL_LINK_STRING:
	value = TclGetString(valueObj);
	valueLength = valueObj->length + 1;
	pp = (char **) linkPtr->addr;

	*pp = ckrealloc(*pp, valueLength);
	memcpy(*pp, value, valueLength);
	break;

    case TCL_LINK_CHARS:
	value = (char *) Tcl_GetStringFromObj(valueObj, &valueLength);
	valueLength++;		/* include end of string char */
	if (valueLength > linkPtr->bytes) {
	    return (char *) "wrong size of char* value";
	}
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, value, (size_t) valueLength);
	    memcpy(linkPtr->addr, value, (size_t) valueLength);
	} else {
	    linkPtr->lastValue.c = '\0';
	    LinkedVar(char) = linkPtr->lastValue.c;
	}
	break;

    case TCL_LINK_BINARY:
	value = (char *) Tcl_GetByteArrayFromObj(valueObj, &valueLength);
	if (valueLength != linkPtr->bytes) {
	    return (char *) "wrong size of binary value";
	}
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, value, (size_t) valueLength);
	    memcpy(linkPtr->addr, value, (size_t) valueLength);
	} else {
	    linkPtr->lastValue.uc = (unsigned char) *value;
	    LinkedVar(unsigned char) = linkPtr->lastValue.uc;
	}
	break;

    default:
	return (char *) "internal error: bad linked variable type";
    }
    return NULL;
}


static Tcl_Obj *
ObjValue(
    Link *linkPtr)		/* Structure describing linked variable. */
{
    char *p;
    Tcl_Obj *resultObj;
    int objc;
    static Tcl_Obj **objv = NULL; // WTF?
    int i;

    switch (linkPtr->type) {
    case TCL_LINK_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(int);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.pi[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.i = LinkedVar(int);
	return Tcl_NewIntObj(linkPtr->lastValue.i);
    case TCL_LINK_WIDE_INT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(Tcl_WideInt);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.pw[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.w = LinkedVar(Tcl_WideInt);
	return Tcl_NewWideIntObj(linkPtr->lastValue.w);
    case TCL_LINK_DOUBLE:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(double);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewDoubleObj(linkPtr->lastValue.pd[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.d = LinkedVar(double);
	return Tcl_NewDoubleObj(linkPtr->lastValue.d);
    case TCL_LINK_BOOLEAN:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes/sizeof(int);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewBooleanObj(linkPtr->lastValue.pi[i] != 0);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.i = LinkedVar(int);
	return Tcl_NewBooleanObj(linkPtr->lastValue.i);
    case TCL_LINK_CHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(char);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.pc[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.c = LinkedVar(char);
	return Tcl_NewIntObj(linkPtr->lastValue.c);
    case TCL_LINK_UCHAR:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(unsigned char);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.puc[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.uc = LinkedVar(unsigned char);
	return Tcl_NewIntObj(linkPtr->lastValue.uc);
    case TCL_LINK_SHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(short);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj*));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.ps[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.s = LinkedVar(short);
	return Tcl_NewIntObj(linkPtr->lastValue.s);
    case TCL_LINK_USHORT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(unsigned short);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj*));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewIntObj(linkPtr->lastValue.pus[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.us = LinkedVar(unsigned short);
	return Tcl_NewIntObj(linkPtr->lastValue.us);
    case TCL_LINK_UINT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(unsigned int);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.pui[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.ui = LinkedVar(unsigned int);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ui);
#if !defined(TCL_WIDE_INT_IS_LONG) && !defined(_WIN32) && !defined(__CYGWIN__)
    case TCL_LINK_LONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(long);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.pl[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.l = LinkedVar(long);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.l);
    case TCL_LINK_ULONG:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(unsigned long);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewWideIntObj(linkPtr->lastValue.pul[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.ul = LinkedVar(unsigned long);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.ul);
#endif
    case TCL_LINK_FLOAT:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(float);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewDoubleObj(linkPtr->lastValue.pf[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.f = LinkedVar(float);
	return Tcl_NewDoubleObj(linkPtr->lastValue.f);
    case TCL_LINK_WIDE_UINT:

	/*
	 * FIXME: represent as a bignum.
	 */
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    objc = linkPtr->bytes / sizeof(Tcl_WideUInt);
	    objv = ckrealloc(objv, objc * sizeof(Tcl_Obj *));
	    for (i=0; i < objc; i++) {
		objv[i] = Tcl_NewWideIntObj((Tcl_WideInt)
			linkPtr->lastValue.puw[i]);
	    }
	    return Tcl_NewListObj(objc, objv);
	}
	linkPtr->lastValue.uw = LinkedVar(Tcl_WideUInt);
	return Tcl_NewWideIntObj((Tcl_WideInt) linkPtr->lastValue.uw);
    case TCL_LINK_STRING:
	p = LinkedVar(char *);
	if (p == NULL) {
	    TclNewLiteralStringObj(resultObj, "NULL");
	    return resultObj;
	}
	return Tcl_NewStringObj(p, -1);

    case TCL_LINK_CHARS:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    linkPtr->lastValue.pc[linkPtr->bytes-1] = '\0';
	    /* take care of proper string end */
	    return Tcl_NewStringObj(linkPtr->lastValue.pc, linkPtr->bytes);
	}
	linkPtr->lastValue.c = '\0';
	return Tcl_NewStringObj(&linkPtr->lastValue.c, 1);

    case TCL_LINK_BINARY:
	if (linkPtr->flags & LINK_ALLOC_LAST) {
	    memcpy(linkPtr->lastValue.aryPtr, linkPtr->addr, linkPtr->bytes);
	    return Tcl_NewByteArrayObj((unsigned char *) linkPtr->addr,
		    linkPtr->bytes);
	}
	linkPtr->lastValue.uc = LinkedVar(unsigned char);
	return Tcl_NewByteArrayObj(&linkPtr->lastValue.uc, 1);

    /*
     * This code only gets executed if the link type is unknown (shouldn't
     * ever happen).
     */

    default:
	TclNewLiteralStringObj(resultObj, "??");

/*
 * This function checks for integer representations, which are valid
 * when linking with C variables, but which are invalid in other
 * contexts in Tcl. Handled are "+", "-", "", "0x", "0b", "0d" and "0o"
 * (upperand lowercase). See bug [39f6304c2e].
 */

int
GetInvalidIntFromObj(Tcl_Obj *objPtr, int *intPtr)
{
    const char *str = TclGetString(objPtr);

    if ((objPtr->length == 0) ||
	    ((objPtr->length == 2) && (str[0] == '0') && strchr("xXbBoOdD", str[1]))) {

/*
 * This function checks for double representations, which are valid
 * when linking with C variables, but which are invalid in other
 * contexts in Tcl. Handled are "+", "-", "", ".", "0x", "0b" and "0o"
 * (upper- and lowercase) and sequences like "1e-". See bug [39f6304c2e].
 */

int
GetInvalidDoubleFromObj(Tcl_Obj *objPtr, double *doublePtr)
{
    int intValue;

    if (TclHasIntRep(objPtr, &invalidRealType)) {
	goto gotdouble;
    }
    if (GetInvalidIntFromObj(objPtr, &intValue) == TCL_OK) {
	*doublePtr = (double) intValue;
	return TCL_OK;
    }
    if (SetInvalidRealFromAny(NULL, objPtr) == TCL_OK) {
    gotdouble:
	*doublePtr = objPtr->internalRep.doubleValue;
	return TCL_OK;
    }
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * LinkFree --
 *
 *	Free's allocated space of given link and link structure.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static void
LinkFree(
    Link *linkPtr)		/* Structure describing linked variable. */
{
    if (linkPtr->flags & LINK_ALLOC_ADDR) {
	ckfree(linkPtr->addr);
    }
    if (linkPtr->flags & LINK_ALLOC_LAST) {
	ckfree(linkPtr->lastValue.aryPtr);
    }
    ckfree((char *) linkPtr);
}

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */

    Tcl_InitStringRep, /* 637 */
    Tcl_FetchIntRep, /* 638 */
    Tcl_StoreIntRep, /* 639 */
    Tcl_HasStringRep, /* 640 */
    Tcl_IncrRefCount, /* 641 */
    Tcl_DecrRefCount, /* 642 */
    Tcl_IsShared, /* 643 */
    Tcl_LinkArray, /* 644 */
};

/* !END!: Do not edit above this line. */

static int		TestgetvarfullnameCmd(
			    void *dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const objv[]);
static int		TestinterpdeleteCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestlinkCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestlinkarrayCmd(void *dummy, Tcl_Interp *interp,
			    int objc, Tcl_Obj *const *objv);
static int		TestlocaleCmd(void *dummy,
			    Tcl_Interp *interp, int objc,
			    Tcl_Obj *const objv[]);
static int		TestmainthreadCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);
static int		TestsetmainloopCmd(void *dummy,
			    Tcl_Interp *interp, int argc, const char **argv);

    Tcl_CreateCommand(interp, "testgetplatform", TestgetplatformCmd,
	    NULL, NULL);
    Tcl_CreateObjCommand(interp, "testgetvarfullname",
	    TestgetvarfullnameCmd, NULL, NULL);
    Tcl_CreateCommand(interp, "testinterpdelete", TestinterpdeleteCmd,
	    NULL, NULL);
    Tcl_CreateCommand(interp, "testlink", TestlinkCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testlinkarray", TestlinkarrayCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testlocale", TestlocaleCmd, NULL,
	    NULL);
    Tcl_CreateCommand(interp, "testpanic", TestpanicCmd, NULL, NULL);
    Tcl_CreateObjCommand(interp, "testparseargs", TestparseargsCmd,NULL,NULL);
    Tcl_CreateObjCommand(interp, "testparser", TestparserObjCmd,
	    NULL, NULL);
    Tcl_CreateObjCommand(interp, "testparsevar", TestparsevarObjCmd,

    } else {
	Tcl_AppendResult(interp, "bad option \"", argv[1],
		"\": should be create, delete, get, set, or update", NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * TestlinkarrayCmd --
 *
 *      This function is invoked to process the "testlinkarray" Tcl command.
 *      It is used to test the 'Tcl_LinkArray' function.
 *
 * Results:
 *      A standard Tcl result.
 *
 * Side effects:
 *	Creates, deletes, and invokes variable links.
 *
 *----------------------------------------------------------------------
 */

static int
TestlinkarrayCmd(
    ClientData dummy,           /* Not used. */
    Tcl_Interp *interp,         /* Current interpreter. */
    int objc,                   /* Number of arguments. */
    Tcl_Obj *const objv[])      /* Argument objects. */
{
    static const char *LinkOption[] = {
        "update", "remove", "create", NULL
    };
    enum LinkOption { LINK_UPDATE, LINK_REMOVE, LINK_CREATE };
    static const char *LinkType[] = {
	"char", "uchar", "short", "ushort", "int", "uint", "long", "ulong",
	"wide", "uwide", "float", "double", "string", "char*", "binary", NULL
    };
    /* all values after TCL_LINK_CHARS_ARRAY are used as arrays (see below) */
    static int LinkTypes[] = {
	TCL_LINK_CHAR, TCL_LINK_UCHAR,
	TCL_LINK_SHORT, TCL_LINK_USHORT, TCL_LINK_INT, TCL_LINK_UINT,
	TCL_LINK_LONG, TCL_LINK_ULONG, TCL_LINK_WIDE_INT, TCL_LINK_WIDE_UINT,
	TCL_LINK_FLOAT, TCL_LINK_DOUBLE, TCL_LINK_STRING, TCL_LINK_CHARS,
	TCL_LINK_BINARY
    };
    int optionIndex, typeIndex, readonly, i, addr, size, length;
    char *name, *arg;

    if (objc < 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "option args");
	return TCL_ERROR;
    }
    if (Tcl_GetIndexFromObj(interp, objv[1], LinkOption, "option", 0,
	    &optionIndex) != TCL_OK) {
	return TCL_ERROR;
    }
    switch ((enum LinkOption) optionIndex) {
    case LINK_UPDATE:
	for (i=2; i<objc; i++) {
	    Tcl_UpdateLinkedVar(interp, Tcl_GetString(objv[i]));
	}
	return TCL_OK;
    case LINK_REMOVE:
	for (i=2; i<objc; i++) {
	    Tcl_UnlinkVar(interp, Tcl_GetString(objv[i]));
	}
	return TCL_OK;
    case LINK_CREATE:
	if (objc < 4) {
	    goto wrongArgs;
	}
	readonly = 0;
	i = 2;

	/*
	 * test on switch -r...
	 */

	arg = Tcl_GetStringFromObj(objv[i], &length);
	if (length < 2) {
	    goto wrongArgs;
	}
	if (arg[0] == '-') {
	    if (arg[1] != 'r') {
		goto wrongArgs;
	    }
	    readonly = TCL_LINK_READ_ONLY;
	    i++;
	}
	if (Tcl_GetIndexFromObj(interp, objv[i++], LinkType, "type", 0,
 		&typeIndex) != TCL_OK) {
	    return TCL_ERROR;
	}
	if (Tcl_GetIntFromObj(interp, objv[i++], &size) == TCL_ERROR) {
	    Tcl_SetObjResult(interp, Tcl_NewStringObj("wrong size value", -1));
	    return TCL_ERROR;
	}
	name = Tcl_GetString(objv[i++]);

	/*
	 * If no address is given request one in the underlying function
	 */

	if (i < objc) {
	    if (Tcl_GetIntFromObj(interp, objv[i], &addr) == TCL_ERROR) {
 		Tcl_SetObjResult(interp, Tcl_NewStringObj(
			"wrong address value", -1));
		return TCL_ERROR;
	    }
	} else {
	    addr = 0;
	}
	return Tcl_LinkArray(interp, name, (char *) addr,
		LinkTypes[typeIndex] | readonly, size);
    }
    return TCL_OK;

  wrongArgs:
    Tcl_WrongNumArgs(interp, 2, objv, "?-readonly? type size name ?address?");
    return TCL_ERROR;
}

/*
 *----------------------------------------------------------------------
 *
 * TestlocaleCmd --
 *
 *	This procedure implements the "testlocale" command.  It is used

    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testlink [llength [info commands testlink]]
testConstraint testlinkarray [llength [info commands testlinkarray]]

foreach i {int real bool string} {
    unset -nocomplain $i
}

test link-1.1 {reading C variables from Tcl} -constraints {testlink} -setup {
    testlink delete

} -result {1 {can't set "bool": variable must have boolean value} 1}
test link-2.5 {writing bad values into variables} -setup {
    testlink delete
} -constraints {testlink} -body {
    testlink set 43 1.23 4 - 56785678 64 250 30000 60000 0xbeefbabe 12321 32123 3.25 1231231234
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    list [catch {set wide gorp} msg] $msg $bool
} -result {1 {can't set "wide": variable must have wide integer value} 1}
test link-2.6 {writing C variables from Tcl} -constraints {testlink} -setup {
    testlink delete
} -body {
    testlink set 43 1.21 4 - 56785678 64 250 30000 60000 0xbaadbeef 12321 32123 3.25 1231231234
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    set int "+"
    set real "+"

    proc x {} {
	upvar wide y
	set y abc
    }
    testlink create 1 1 1 1 1 1 1 1 1 1 1 1 1 1
    testlink set -4 16.3 1 {} 778899 {} {} {} {} {} {} {} {} {}
    list [catch x msg] $msg $wide
} -result {1 {can't set "y": variable must have wide integer value} 778899}

test link-8.1 {Tcl_UpdateLinkedVar procedure} {testlink} {
    proc x args {
	global x int real bool string wide
	lappend x $args $int $real $bool $string $wide
    }
    set x {}

} {}
test link-8.3 {Tcl_UpdateLinkedVar procedure, read-only variable} {testlink} {
    testlink create 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    list [catch {
	testlink update 47 {} {} {} {} {} {} {} {} {} {} {} {} {}
    } msg] $msg $int
} {0 {} 47}

test link-9.1 {linkarray usage messages} {
    set mylist [list]
    catch {testlinkarray} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray update} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray remove} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray create} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray create xx 1 my} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {testlinkarray create char* 0 my} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    join $mylist "\n"
} {wrong # args: should be "testlinkarray option args"
bad option "x": must be update, remove, or create


wrong # args: should be "testlinkarray create ?-readonly? type size name ?address?"
bad type "xx": must be char, uchar, short, ushort, int, uint, long, ulong, wide, uwide, float, double, string, char*, or binary
wrong array size given}

test link-10.1 {linkarray char*} {
    set mylist [list]
    testlinkarray create char* 1 ::my(var)
    lappend mylist [set ::my(var) ""]
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create char* 4 ::my(var)
    set ::my(var) x
    catch {set ::my(var) xyzz} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create -r char* 4 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {
can't set "::my(var)": wrong size of char* value
can't set "::my(var)": wrong size of char* value
can't set "::my(var)": linked variable is read-only}

test link-11.1 {linkarray char} {
    set mylist [list]
    testlinkarray create char 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1234} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create char 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r char 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have char value
120
can't set "::my(var)": variable must have char value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-12.1 {linkarray unsigned char} {
    set mylist [list]
    testlinkarray create uchar 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1234} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) -1} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create uchar 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r uchar 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have unsigned char value
120
can't set "::my(var)": variable must have unsigned char value
can't set "::my(var)": variable must have unsigned char value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-13.1 {linkarray short} {
    set mylist [list]
    testlinkarray create short 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 123456} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create short 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r short 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have short value
120
can't set "::my(var)": variable must have short value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-14.1 {linkarray unsigned short} {
    set mylist [list]
    testlinkarray create ushort 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 123456} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) -1} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create ushort 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r ushort 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have unsigned short value
120
can't set "::my(var)": variable must have unsigned short value
can't set "::my(var)": variable must have unsigned short value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-15.1 {linkarray int} {
    set mylist [list]
    testlinkarray create int 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e3} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create int 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r int 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have integer value
120
can't set "::my(var)": variable must have integer value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-16.1 {linkarray unsigned int} {
    set mylist [list]
    testlinkarray create uint 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) -1} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create uint 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r uint 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have unsigned int value
120
can't set "::my(var)": variable must have unsigned int value
can't set "::my(var)": variable must have unsigned int value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-17.1 {linkarray long} {
    set mylist [list]
    testlinkarray create long 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create long 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r long 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have long value
120
can't set "::my(var)": variable must have long value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-18.1 {linkarray unsigned long} {
    set mylist [list]
    testlinkarray create ulong 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) -1} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create ulong 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r ulong 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have unsigned long value
120
can't set "::my(var)": variable must have unsigned long value
can't set "::my(var)": variable must have unsigned long value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-19.1 {linkarray wide} {
    set mylist [list]
    testlinkarray create wide 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create wide 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r wide 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have wide integer value
120
can't set "::my(var)": variable must have wide integer value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-20.1 {linkarray unsigned wide} {
    set mylist [list]
    testlinkarray create uwide 1 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist [set ::my(var) 120]
    catch {set ::my(var) 1e33} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) -1} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    testlinkarray create uwide 4 ::my(var)
    catch {set ::my(var) {1 2 3}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) {1 2 3 4}
    lappend mylist $my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r uwide 2 ::my(var)
    catch {set ::my(var) {1 2}} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": variable must have unsigned wide int value
120
can't set "::my(var)": variable must have unsigned wide int value
can't set "::my(var)": variable must have unsigned wide int value
can't set "::my(var)": wrong dimension
1 2 3 4
can't set "::my(var)": linked variable is read-only}

test link-21.1 {linkarray string} {
    set mylist [list]
    testlinkarray create string 1 ::my(var)
    lappend mylist [set ::my(var) ""]
    lappend mylist [set ::my(var) "xyz"]
    lappend mylist $::my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r string 4 ::my(var)
    catch {set ::my(var) x} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {
xyz
xyz
can't set "::my(var)": linked variable is read-only}

test link-22.1 {linkarray binary} {
    set mylist [list]
    testlinkarray create binary 1 ::my(var)
    set ::my(var) x
    catch {set ::my(var) xy} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    lappend mylist $::my(var)
    testlinkarray remove ::my(var)
    testlinkarray create binary 4 ::my(var)
    catch {set ::my(var) abc} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    catch {set ::my(var) abcde} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    set ::my(var) abcd
    lappend mylist $::my(var)
    testlinkarray remove ::my(var)
    testlinkarray create -r binary 4 ::my(var)
    catch {set ::my(var) xyzv} my(msg)
    lappend mylist $my(msg)
    unset my(msg)
    testlinkarray remove ::my(var)
    unset my
    join $mylist "\n"
} {can't set "::my(var)": wrong size of binary value
x
can't set "::my(var)": wrong size of binary value
can't set "::my(var)": wrong size of binary value
abcd
can't set "::my(var)": linked variable is read-only}

catch {testlink set 0 0 0 - 0 0 0 0 0 0 0 0 0 0}
catch {testlink delete}
foreach i {int real bool string wide} {
    unset -nocomplain $i
}