Tcl Source Code

	    }							\
	    goto cleanupV_pushObjResultPtr;			\
	} else {						\
	    goto cleanupV;					\
	}							\
    } while (0)

#ifndef TCL_COMPILE_DEBUG
#define JUMP_PEEPHOLE_F(condition, pcAdjustment, cleanup) \
    do {								\
	pc += (pcAdjustment);						\
	switch (*pc) {							\
	case INST_JUMP_FALSE1:						\
	    NEXT_INST_F(((condition)? 2 : TclGetInt1AtPtr(pc+1)), (cleanup), 0); \
	case INST_JUMP_TRUE1:						\
	    NEXT_INST_F(((condition)? TclGetInt1AtPtr(pc+1) : 2), (cleanup), 0); \
	case INST_JUMP_FALSE4:						\
	    NEXT_INST_F(((condition)? 5 : TclGetInt4AtPtr(pc+1)), (cleanup), 0); \
	case INST_JUMP_TRUE4:						\
	    NEXT_INST_F(((condition)? TclGetInt4AtPtr(pc+1) : 5), (cleanup), 0); \
	default:							\
	    if ((condition) < 0) {					\
		TclNewLongObj(objResultPtr, -1);				\
	    } else {							\
		objResultPtr = TCONST((condition) > 0);			\
	    }								\
	    NEXT_INST_F(0, (cleanup), 1);				\
	}								\
    } while (0)
#define JUMP_PEEPHOLE_V(condition, pcAdjustment, cleanup) \
    do {								\
	pc += (pcAdjustment);						\
	switch (*pc) {							\
	case INST_JUMP_FALSE1:						\
	    NEXT_INST_V(((condition)? 2 : TclGetInt1AtPtr(pc+1)), (cleanup), 0); \
	case INST_JUMP_TRUE1:						\
	    NEXT_INST_V(((condition)? TclGetInt1AtPtr(pc+1) : 2), (cleanup), 0); \
	case INST_JUMP_FALSE4:						\
	    NEXT_INST_V(((condition)? 5 : TclGetInt4AtPtr(pc+1)), (cleanup), 0); \
	case INST_JUMP_TRUE4:						\
	    NEXT_INST_V(((condition)? TclGetInt4AtPtr(pc+1) : 5), (cleanup), 0); \
	default:							\
	    if ((condition) < 0) {					\
		TclNewLongObj(objResultPtr, -1);				\
	    } else {							\
		objResultPtr = TCONST((condition) > 0);			\
	    }								\
	    NEXT_INST_V(0, (cleanup), 1);				\
	}								\
    } while (0)
#else /* TCL_COMPILE_DEBUG */
#define JUMP_PEEPHOLE_F(condition, pcAdjustment, cleanup) \
    do{									\
	if ((condition) < 0) {						\
	    TclNewLongObj(objResultPtr, -1);				\
	} else {							\
	    objResultPtr = TCONST((condition) > 0);			\
	}								\
	NEXT_INST_F((pcAdjustment), (cleanup), 1);			\
    } while (0)
#define JUMP_PEEPHOLE_V(condition, pcAdjustment, cleanup) \
    do{									\
	if ((condition) < 0) {						\
	    TclNewLongObj(objResultPtr, -1);				\
	} else {							\
	    objResultPtr = TCONST((condition) > 0);			\
	}								\
	NEXT_INST_V((pcAdjustment), (cleanup), 1);			\
    } while (0)
#endif

/*
 * Macros used to cache often-referenced Tcl evaluation stack information
 * in local variables. Note that a DECACHE_STACK_INFO()-CACHE_STACK_INFO()
 * pair must surround any call inside TclNRExecuteByteCode (and a few other
 * procedures that use this scheme) that could result in a recursive call
 * to TclNRExecuteByteCode.
 */

	    TclArgumentBCRelease((Tcl_Interp *) iPtr, bcFramePtr);
	}
	if (codePtr->flags & TCL_BYTECODE_RECOMPILE) {
	    iPtr->flags |= ERR_ALREADY_LOGGED;
	    codePtr->flags &= ~TCL_BYTECODE_RECOMPILE;
	}

	if (result != TCL_OK) {
	    pc--;
	    goto processExceptionReturn;
	}

	/*
	 * Push the call's object result and continue execution with the next
	 * instruction.
	 */

	TRACE_WITH_OBJ(("%u => ... after \"%.20s\": TCL_OK, result=",
		objc, cmdNameBuf), Tcl_GetObjResult(interp));

	/*
	 * Reset the interp's result to avoid possible duplications of large
	 * objects [Bug 781585]. We do not call Tcl_ResetResult to avoid any
	 * side effects caused by the resetting of errorInfo and errorCode
	 * [Bug 804681], which are not needed here. We chose instead to
	 * manipulate the interp's object result directly.
	 *
	 * Note that the result object is now in objResultPtr, it keeps the
	 * refCount it had in its role of iPtr->objResultPtr.
	 */

	objResultPtr = Tcl_GetObjResult(interp);
	TclNewObj(objPtr);
	Tcl_IncrRefCount(objPtr);
	iPtr->objResultPtr = objPtr;
#ifndef TCL_COMPILE_DEBUG
	if (*pc == INST_POP) {
	    TclDecrRefCount(objResultPtr);
	    NEXT_INST_V(1, cleanup, 0);
	}
#endif
	NEXT_INST_V(0, cleanup, -1);




    }

    /*
     * Targets for standard instruction endings; unrolled for speed in the
     * most frequent cases (instructions that consume up to two stack
     * elements).
     *

	CoroutineData *corPtr = iPtr->execEnvPtr->corPtr;

	TRACE(("%.30s => ", O2S(OBJ_AT_TOS)));
	if (!corPtr) {
	    TRACE_APPEND(("ERROR: yield outside coroutine\n"));
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "yield can only be called in a coroutine", -1));
	    DECACHE_STACK_INFO();
	    Tcl_SetErrorCode(interp, "TCL", "COROUTINE", "ILLEGAL_YIELD",
		    NULL);
	    CACHE_STACK_INFO();
	    goto gotError;
	}

#ifdef TCL_COMPILE_DEBUG
	TRACE_WITH_OBJ(("yield, result="), iPtr->objResultPtr);
	if (traceInstructions) {
	    fprintf(stdout, "\n");

	opnd = TclGetUInt1AtPtr(pc+1);

	if (!(iPtr->varFramePtr->isProcCallFrame & 1)) {
	    TRACE(("%d => ERROR: tailcall in non-proc context\n", opnd));
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "tailcall can only be called from a proc or lambda", -1));
	    DECACHE_STACK_INFO();
	    Tcl_SetErrorCode(interp, "TCL", "TAILCALL", "ILLEGAL", NULL);
	    CACHE_STACK_INFO();
	    goto gotError;
	}

#ifdef TCL_COMPILE_DEBUG
	{
	    register int i;

	objResultPtr = OBJ_AT_TOS;
	TRACE_WITH_OBJ(("=> "), objResultPtr);
	NEXT_INST_F(1, 0, 1);

    case INST_OVER:
	opnd = TclGetUInt4AtPtr(pc+1);
	objResultPtr = OBJ_AT_DEPTH(opnd);
	TRACE_WITH_OBJ(("%u => ", opnd), objResultPtr);
	NEXT_INST_F(5, 0, 1);

    case INST_REVERSE: {
	Tcl_Obj **a, **b;

	opnd = TclGetUInt4AtPtr(pc+1);
	a = tosPtr-(opnd-1);
	b = tosPtr;
	while (a<b) {
	    tmpPtr = *a;
	    *a = *b;
	    *b = tmpPtr;
	    a++; b--;
	}
	TRACE(("%u => OK\n", opnd));
	NEXT_INST_F(5, 0, 0);
    }

    case INST_CONCAT1: {
	int appendLen = 0;
	char *bytes, *p;
	Tcl_Obj **currPtr;

	 * error, also in INST_EXPAND_STKTOP).
	 */

	TclNewObj(objPtr);
	objPtr->internalRep.ptrAndLongRep.value = CURR_DEPTH;
	objPtr->length = 0;
	PUSH_TAUX_OBJ(objPtr);
	TRACE(("=> mark depth as %d\n", (int) CURR_DEPTH));
	NEXT_INST_F(1, 0, 0);

    case INST_EXPAND_DROP:
	/*
	 * Drops an element of the auxObjList, popping stack elements to
	 * restore the stack to the state before the point where the aux
	 * element was created.
	 */

	CLANG_ASSERT(auxObjList);
	objc = CURR_DEPTH - auxObjList->internalRep.ptrAndLongRep.value;
	POP_TAUX_OBJ();
#ifdef TCL_COMPILE_DEBUG
	/* Ugly abuse! */
	starting = 1;
#endif
	TRACE(("=> drop %d items\n", objc));
	NEXT_INST_V(1, objc, 0);

    case INST_EXPAND_STKTOP: {
	int i;
	ptrdiff_t moved;

	/*

	    TRACE(("\"%.30s\" (by %ld) => ", O2S(objPtr), increment));
	}
	part1Ptr = objPtr;
	opnd = -1;
	varPtr = TclObjLookupVarEx(interp, objPtr, part2Ptr,
		TCL_LEAVE_ERR_MSG, "read", 1, 1, &arrayPtr);
	if (!varPtr) {
	    DECACHE_STACK_INFO();
	    Tcl_AddErrorInfo(interp,
		    "\n    (reading value of variable to increment)");
	    CACHE_STACK_INFO();
	    TRACE_ERROR(interp);
	    Tcl_DecrRefCount(incrPtr);
	    goto gotError;
	}
	cleanup = ((part2Ptr == NULL)? 1 : 2);
	goto doIncrVar;

	/*
	 * Peep-hole optimisation: if you're about to jump, do jump from here.
	 */

    afterExistsPeephole: {
	int found = (varPtr && !TclIsVarUndefined(varPtr));















	TRACE_APPEND(("%d\n", found ? 1 : 0));
	JUMP_PEEPHOLE_V(found, pcAdjustment, cleanup);
    }

    /*
     *	   End of INST_EXIST instructions.
     * -----------------------------------------------------------------
     *	   Start of INST_UNSET instructions.
     */

    {
	int flags;

    case INST_UNSET_SCALAR:
	flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0;
	opnd = TclGetUInt4AtPtr(pc+2);
	varPtr = LOCAL(opnd);
	while (TclIsVarLink(varPtr)) {
	    varPtr = varPtr->value.linkPtr;
	}
	TRACE(("%s %u => ", (flags ? "normal" : "noerr"), opnd));
	if (TclIsVarDirectUnsettable(varPtr) && !TclIsVarInHash(varPtr)) {
	    /*
	     * No errors, no traces, no searches: just make the variable cease
	     * to exist.
	     */

	    if (!TclIsVarUndefined(varPtr)) {

	NEXT_INST_F(6, 1, 0);

    case INST_UNSET_ARRAY_STK:
	flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0;
	cleanup = 2;
	part2Ptr = OBJ_AT_TOS;		/* element name */
	part1Ptr = OBJ_UNDER_TOS;	/* array name */
	TRACE(("%s \"%.30s(%.30s)\" => ", (flags ? "normal" : "noerr"),
		O2S(part1Ptr), O2S(part2Ptr)));
	goto doUnsetStk;

    case INST_UNSET_STK:
	flags = TclGetUInt1AtPtr(pc+1) ? TCL_LEAVE_ERR_MSG : 0;
	cleanup = 1;
	part2Ptr = NULL;
	part1Ptr = OBJ_AT_TOS;		/* variable name */
	TRACE(("%s \"%.30s\" => ", (flags ? "normal" : "noerr"),
		O2S(part1Ptr)));

    doUnsetStk:
	DECACHE_STACK_INFO();
	if (TclObjUnsetVar2(interp, part1Ptr, part2Ptr, flags) != TCL_OK
		&& (flags & TCL_LEAVE_ERR_MSG)) {
	    goto errorInUnset;
	}

	/*
	 * This is really an unset operation these days. Do not issue.
	 */

    case INST_DICT_DONE:
	opnd = TclGetUInt4AtPtr(pc+1);
	TRACE(("%u => OK\n", opnd));
	varPtr = LOCAL(opnd);
	while (TclIsVarLink(varPtr)) {
	    varPtr = varPtr->value.linkPtr;
	}
	if (TclIsVarDirectUnsettable(varPtr) && !TclIsVarInHash(varPtr)) {
	    if (!TclIsVarUndefined(varPtr)) {
		TclDecrRefCount(varPtr->value.objPtr);

	    if (TclIsVarArrayElement(varPtr) || !TclIsVarUndefined(varPtr)) {
		/*
		 * Either an array element, or a scalar: lose!
		 */

		TclObjVarErrMsg(interp, part1Ptr, NULL, "array set",
			"variable isn't array", opnd);
		DECACHE_STACK_INFO();
		Tcl_SetErrorCode(interp, "TCL", "WRITE", "ARRAY", NULL);
		CACHE_STACK_INFO();
		TRACE_ERROR(interp);
		goto gotError;
	    }
	    TclSetVarArray(varPtr);
	    varPtr->value.tablePtr = ckalloc(sizeof(TclVarHashTable));
	    TclInitVarHashTable(varPtr->value.tablePtr,
		    TclGetVarNsPtr(varPtr));

		framePtr = framePtr->callerVarPtr) {
	    /* Empty loop body */
	}
	if (framePtr == rootFramePtr) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "bad level \"%s\"", TclGetString(OBJ_AT_TOS)));
	    TRACE_ERROR(interp);
	    DECACHE_STACK_INFO();
	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "STACK_LEVEL",
		    TclGetString(OBJ_AT_TOS), NULL);
	    CACHE_STACK_INFO();
	    goto gotError;
	}
	objResultPtr = Tcl_NewListObj(framePtr->objc, framePtr->objv);
	TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
	NEXT_INST_F(1, 1, 1);
    }
    case INST_RESOLVE_COMMAND: {

	if (framePtr == NULL ||
		!(framePtr->isProcCallFrame & FRAME_IS_METHOD)) {
	    TRACE(("=> ERROR: no TclOO call context\n"));
	    Tcl_SetObjResult(interp, Tcl_NewStringObj(
		    "self may only be called from inside a method",
		    -1));
	    DECACHE_STACK_INFO();
	    Tcl_SetErrorCode(interp, "TCL", "OO", "CONTEXT_REQUIRED", NULL);
	    CACHE_STACK_INFO();
	    goto gotError;
	}
	contextPtr = framePtr->clientData;

	/*
	 * Call out to get the name; it's expensive to compute but cached.
	 */

	/*
	 * Peep-hole optimisation: if you're about to jump, do jump from here.
	 * We're saving the effort of pushing a boolean value only to pop it
	 * for branching.
	 */














	JUMP_PEEPHOLE_F(match, 1, 2);


    case INST_LIST_CONCAT:
	value2Ptr = OBJ_AT_TOS;
	valuePtr = OBJ_UNDER_TOS;
	TRACE(("\"%.30s\" \"%.30s\" => ", O2S(valuePtr), O2S(value2Ptr)));
	if (Tcl_IsShared(valuePtr)) {
	    objResultPtr = Tcl_DuplicateObj(valuePtr);

		break;
	    case INST_GE:
		match = (match >= 0);
		break;
	    }
	}













	TRACE(("\"%.20s\" \"%.20s\" => %d\n", O2S(valuePtr), O2S(value2Ptr),
		(match < 0 ? -1 : match > 0 ? 1 : 0)));


	JUMP_PEEPHOLE_F(match, 1, 2);





    case INST_STR_LEN:
	valuePtr = OBJ_AT_TOS;
	length = Tcl_GetCharLength(valuePtr);
	TclNewLongObj(objResultPtr, length);
	TRACE(("\"%.20s\" => %d\n", O2S(valuePtr), length));
	NEXT_INST_F(1, 1, 1);

    case INST_STR_INDEX:
	value2Ptr = OBJ_AT_TOS;
	valuePtr = OBJ_UNDER_TOS;
	TRACE(("\"%.20s\" %.20s => ", O2S(valuePtr), O2S(value2Ptr)));

    case INST_STR_MAP:
	valuePtr = OBJ_AT_TOS;		/* "Main" string. */
	value3Ptr = OBJ_UNDER_TOS;	/* "Target" string. */
	value2Ptr = OBJ_AT_DEPTH(2);	/* "Source" string. */
	if (value3Ptr == value2Ptr) {
	    objResultPtr = valuePtr;
	    goto doneStringMap;
	} else if (valuePtr == value2Ptr) {
	    objResultPtr = value3Ptr;
	    goto doneStringMap;
	}
	ustring1 = Tcl_GetUnicodeFromObj(valuePtr, &length);
	if (length == 0) {
	    objResultPtr = valuePtr;
	    goto doneStringMap;
	}
	ustring2 = Tcl_GetUnicodeFromObj(value2Ptr, &length2);
	if (length2 > length || length2 == 0) {
	    objResultPtr = valuePtr;
	    goto doneStringMap;
	} else if (length2 == length) {
	    if (memcmp(ustring1, ustring2, sizeof(Tcl_UniChar) * length)) {
		objResultPtr = valuePtr;
	    } else {
		objResultPtr = value3Ptr;
	    }
	    goto doneStringMap;
	}
	ustring3 = Tcl_GetUnicodeFromObj(value3Ptr, &length3);

	objResultPtr = Tcl_NewUnicodeObj(ustring1, 0);
	p = ustring1;
	end = ustring1 + length;
	for (; ustring1 < end; ustring1++) {

	if (p != ustring1) {
	    /*
	     * Put the rest of the unmapped chars onto result.
	     */

	    Tcl_AppendUnicodeToObj(objResultPtr, p, ustring1 - p);
	}
    doneStringMap:
	TRACE_WITH_OBJ(("%.20s %.20s %.20s => ",
		O2S(value2Ptr), O2S(value3Ptr), O2S(valuePtr)), objResultPtr);
	NEXT_INST_V(1, 3, 1);

    case INST_STR_FIND:
	ustring1 = Tcl_GetUnicodeFromObj(OBJ_AT_TOS, &length);	/* Haystack */
	ustring2 = Tcl_GetUnicodeFromObj(OBJ_UNDER_TOS, &length2);/* Needle */

		    break;
		}
	    }
	}

	TRACE(("%.20s %.20s => %d\n",
		O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), match));

	TclNewLongObj(objResultPtr, match);
	NEXT_INST_F(1, 2, 1);

    case INST_STR_FIND_LAST:
	ustring1 = Tcl_GetUnicodeFromObj(OBJ_AT_TOS, &length);	/* Haystack */
	ustring2 = Tcl_GetUnicodeFromObj(OBJ_UNDER_TOS, &length2);/* Needle */

	TRACE(("%.20s %.20s => %d\n", O2S(valuePtr), O2S(value2Ptr), match));

	/*
	 * Peep-hole optimisation: if you're about to jump, do jump from here.
	 */














	JUMP_PEEPHOLE_F(match, 2, 2);


    case INST_REGEXP:
	cflags = TclGetInt1AtPtr(pc+1); /* RE compile flages like NOCASE */
	valuePtr = OBJ_AT_TOS;		/* String */
	value2Ptr = OBJ_UNDER_TOS;	/* Pattern */
	TRACE(("%.20s %.20s => ", O2S(valuePtr), O2S(value2Ptr)));

	/*
	 * Compile and match the regular expression.
	 */

	{
	    Tcl_RegExp regExpr =
		    Tcl_GetRegExpFromObj(interp, value2Ptr, cflags);

	    if (regExpr == NULL) {
		TRACE_ERROR(interp);
		goto gotError;
	    }

	    match = Tcl_RegExpExecObj(interp, regExpr, valuePtr, 0, 0, 0);

	    if (match < 0) {


		TRACE_ERROR(interp);



		goto gotError;
	    }
	}

	TRACE_APPEND(("%d\n", match));

	/*
	 * Peep-hole optimisation: if you're about to jump, do jump from here.
	 * Adjustment is 2 due to the nocase byte.
	 */














	JUMP_PEEPHOLE_F(match, 2, 2);

    }

    /*
     *	   End of string-related instructions.
     * -----------------------------------------------------------------
     *	   Start of numeric operator instructions.
     */

	}

	/*
	 * Peep-hole optimisation: if you're about to jump, do jump from here.
	 */

    foundResult:













	TRACE(("\"%.20s\" \"%.20s\" => %d\n", O2S(valuePtr), O2S(value2Ptr),
		iResult));
	JUMP_PEEPHOLE_F(iResult, 1, 2);
    }

    case INST_MOD:
    case INST_LSHIFT:
    case INST_RSHIFT:
    case INST_BITOR:
    case INST_BITXOR:

		    goto longResultOfArithmetic;
		}

	    case INST_RSHIFT:
		if (l2 < 0) {
		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
			    "negative shift argument", -1));
#ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR
		    DECACHE_STACK_INFO();
		    Tcl_SetErrorCode(interp, "ARITH", "DOMAIN",
			    "domain error: argument not in valid range",
			    NULL);
		    CACHE_STACK_INFO();
#endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */
		    goto gotError;
		} else if (l1 == 0) {
		    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
		    objResultPtr = TCONST(0);
		    TRACE(("%s\n", O2S(objResultPtr)));
		    NEXT_INST_F(1, 2, 1);
		} else {

		    goto longResultOfArithmetic;
		}

	    case INST_LSHIFT:
		if (l2 < 0) {
		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
			    "negative shift argument", -1));
#ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR
		    DECACHE_STACK_INFO();
		    Tcl_SetErrorCode(interp, "ARITH", "DOMAIN",
			    "domain error: argument not in valid range",
			    NULL);
		    CACHE_STACK_INFO();
#endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */
		    goto gotError;
		} else if (l1 == 0) {
		    TRACE(("%s %s => ", O2S(valuePtr), O2S(value2Ptr)));
		    objResultPtr = TCONST(0);
		    TRACE(("%s\n", O2S(objResultPtr)));
		    NEXT_INST_F(1, 2, 1);
		} else if (l2 > (long) INT_MAX) {
		    /*
		     * Technically, we could hold the value (1 << (INT_MAX+1))
		     * in an mp_int, but since we're using mp_mul_2d() to do
		     * the work, and it takes only an int argument, that's a
		     * good place to draw the line.
		     */

		    Tcl_SetObjResult(interp, Tcl_NewStringObj(
			    "integer value too large to represent", -1));
#ifdef ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR
		    DECACHE_STACK_INFO();
		    Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
			    "integer value too large to represent", NULL);
		    CACHE_STACK_INFO();
#endif /* ERROR_CODE_FOR_EARLY_DETECTED_ARITH_ERROR */
		    goto gotError;
		} else {
		    int shift = (int) l2;

		    /*
		     * Handle shifts within the native long range.
		     */

	int b;

	valuePtr = OBJ_AT_TOS;

	/* TODO - check claim that taking address of b harms performance */
	/* TODO - consider optimization search for constants */
	if (TclGetBooleanFromObj(NULL, valuePtr, &b) != TCL_OK) {
	    TRACE(("\"%.20s\" => ERROR: illegal type %s\n", O2S(valuePtr),
		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
	    DECACHE_STACK_INFO();
	    IllegalExprOperandType(interp, pc, valuePtr);
	    CACHE_STACK_INFO();
	    goto gotError;
	}
	/* TODO: Consider peephole opt. */
	objResultPtr = TCONST(!b);
	TRACE_WITH_OBJ(("%s => ", O2S(valuePtr)), objResultPtr);
	NEXT_INST_F(1, 1, 1);
    }

    case INST_BITNOT:
	valuePtr = OBJ_AT_TOS;
	TRACE(("\"%.20s\" => ", O2S(valuePtr)));
	if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK)
		|| (type1==TCL_NUMBER_NAN) || (type1==TCL_NUMBER_DOUBLE)) {
	    /*
	     * ... ~$NonInteger => raise an error.
	     */

	    TRACE_APPEND(("ERROR: illegal type %s\n",
		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
	    DECACHE_STACK_INFO();
	    IllegalExprOperandType(interp, pc, valuePtr);
	    CACHE_STACK_INFO();
	    goto gotError;
	}
	if (type1 == TCL_NUMBER_LONG) {
	    l1 = *((const long *) ptr1);
	    if (Tcl_IsShared(valuePtr)) {
		TclNewLongObj(objResultPtr, ~l1);
		TRACE_APPEND(("%s\n", O2S(objResultPtr)));
		NEXT_INST_F(1, 1, 1);
	    }
	    TclSetLongObj(valuePtr, ~l1);
	    TRACE_APPEND(("%s\n", O2S(valuePtr)));
	    NEXT_INST_F(1, 0, 0);
	}
	objResultPtr = ExecuteExtendedUnaryMathOp(*pc, valuePtr);
	if (objResultPtr != NULL) {
	    TRACE_APPEND(("%s\n", O2S(objResultPtr)));
	    NEXT_INST_F(1, 1, 1);
	} else {
	    TRACE_APPEND(("%s\n", O2S(valuePtr)));
	    NEXT_INST_F(1, 0, 0);
	}

    case INST_UMINUS:
	valuePtr = OBJ_AT_TOS;
	TRACE(("\"%.20s\" => ", O2S(valuePtr)));
	if ((GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK)
		|| IsErroringNaNType(type1)) {
	    TRACE_APPEND(("ERROR: illegal type %s \n",
		    (valuePtr->typePtr? valuePtr->typePtr->name : "null")));
	    DECACHE_STACK_INFO();
	    IllegalExprOperandType(interp, pc, valuePtr);
	    CACHE_STACK_INFO();
	    goto gotError;
	}
	switch (type1) {
	case TCL_NUMBER_NAN:
	    /* -NaN => NaN */
	    TRACE_APPEND(("%s\n", O2S(valuePtr)));
	    NEXT_INST_F(1, 0, 0);
	case TCL_NUMBER_LONG:
	    l1 = *((const long *) ptr1);
	    if (l1 != LONG_MIN) {
		if (Tcl_IsShared(valuePtr)) {
		    TclNewLongObj(objResultPtr, -l1);
		    TRACE_APPEND(("%s\n", O2S(objResultPtr)));
		    NEXT_INST_F(1, 1, 1);
		}
		TclSetLongObj(valuePtr, -l1);
		TRACE_APPEND(("%s\n", O2S(valuePtr)));
		NEXT_INST_F(1, 0, 0);
	    }
	    /* FALLTHROUGH */
	}
	objResultPtr = ExecuteExtendedUnaryMathOp(*pc, valuePtr);
	if (objResultPtr != NULL) {
	    TRACE_APPEND(("%s\n", O2S(objResultPtr)));
	    NEXT_INST_F(1, 1, 1);
	} else {
	    TRACE_APPEND(("%s\n", O2S(valuePtr)));
	    NEXT_INST_F(1, 0, 0);
	}

    case INST_UPLUS:
    case INST_TRY_CVT_TO_NUMERIC:
	/*
	 * Try to convert the topmost stack object to numeric object. This is
	 * done in order to support [expr]'s policy of interpreting operands
	 * if at all possible as numbers first, then strings.
	 */

	valuePtr = OBJ_AT_TOS;
	TRACE(("\"%.20s\" => ", O2S(valuePtr)));

	if (GetNumberFromObj(NULL, valuePtr, &ptr1, &type1) != TCL_OK) {
	    if (*pc == INST_UPLUS) {
		/*
		 * ... +$NonNumeric => raise an error.
		 */

		TRACE_APPEND(("ERROR: illegal type %s\n",
			(valuePtr->typePtr? valuePtr->typePtr->name:"null")));
		DECACHE_STACK_INFO();
		IllegalExprOperandType(interp, pc, valuePtr);
		CACHE_STACK_INFO();
		goto gotError;
	    }

	    /* ... TryConvertToNumeric($NonNumeric) is acceptable */
	    TRACE_APPEND(("not numeric\n"));
	    NEXT_INST_F(1, 0, 0);
	}
	if (IsErroringNaNType(type1)) {
	    if (*pc == INST_UPLUS) {
		/*
		 * ... +$NonNumeric => raise an error.
		 */

		TRACE_APPEND(("ERROR: illegal type %s\n",
			(valuePtr->typePtr? valuePtr->typePtr->name:"null")));
		DECACHE_STACK_INFO();
		IllegalExprOperandType(interp, pc, valuePtr);
		CACHE_STACK_INFO();
	    } else {
		/*
		 * Numeric conversion of NaN -> error.
		 */

		TRACE_APPEND(("ERROR: IEEE floating pt error\n"));

		DECACHE_STACK_INFO();
		TclExprFloatError(interp, *((const double *) ptr1));
		CACHE_STACK_INFO();
	    }
	    goto gotError;
	}

	/*
	 * Ensure that the numeric value has a string rep the same as the
	 * formatted version of its internal rep. This is used, e.g., to make
	 * sure that "expr {0001}" yields "1", not "0001". We implement this
	 * by _discarding_ the string rep since we know it will be
	 * regenerated, if needed later, by formatting the internal rep's
	 * value.
	 */

	if (valuePtr->bytes == NULL) {
	    TRACE_APPEND(("numeric, same Tcl_Obj\n"));
	    NEXT_INST_F(1, 0, 0);
	}
	if (Tcl_IsShared(valuePtr)) {
	    /*
	     * Here we do some surgery within the Tcl_Obj internals. We want
	     * to copy the intrep, but not the string, so we temporarily hide
	     * the string so we do not copy it.
	     */

	    char *savedString = valuePtr->bytes;

	    valuePtr->bytes = NULL;
	    objResultPtr = Tcl_DuplicateObj(valuePtr);
	    valuePtr->bytes = savedString;
	    TRACE_APPEND(("numeric, new Tcl_Obj\n"));
	    NEXT_INST_F(1, 1, 1);
	}
	TclInvalidateStringRep(valuePtr);
	TRACE_APPEND(("numeric, same Tcl_Obj\n"));
	NEXT_INST_F(1, 0, 0);
    }

    /*
     *	   End of numeric operator instructions.
     * -----------------------------------------------------------------
     */

    case INST_BREAK:
	/*
	DECACHE_STACK_INFO();
	Tcl_ResetResult(interp);
	CACHE_STACK_INFO();
	*/
	result = TCL_BREAK;
	cleanup = 0;
	TRACE(("=> BREAK!\n"));
	goto processExceptionReturn;

    case INST_CONTINUE:
	/*
	DECACHE_STACK_INFO();
	Tcl_ResetResult(interp);
	CACHE_STACK_INFO();
	*/
	result = TCL_CONTINUE;
	cleanup = 0;
	TRACE(("=> CONTINUE!\n"));
	goto processExceptionReturn;

    {
	ForeachInfo *infoPtr;
	Var *iterVarPtr, *listVarPtr;
	Tcl_Obj *oldValuePtr, *listPtr, **elements;
	ForeachVarList *varListPtr;

		    }
		    valIndex++;
		}
		TclDecrRefCount(listPtr);
		listTmpIndex++;
	    }
	}
	TRACE_APPEND(("%d lists, iter %d, %s loop\n",
		numLists, iterNum, (continueLoop? "continue" : "exit")));

	/*
	 * Run-time peep-hole optimisation: the compiler ALWAYS follows
	 * INST_FOREACH_STEP4 with an INST_JUMP_FALSE. We just skip that
	 * instruction and jump direct from here.
	 */

	 * Initialize the data for the looping construct, pushing the
	 * corresponding Tcl_Objs to the stack.
	 */

	opnd = TclGetUInt4AtPtr(pc+1);
	infoPtr = codePtr->auxDataArrayPtr[opnd].clientData;
	numLists = infoPtr->numLists;
	TRACE(("%u => ", opnd));

	/*
	 * Compute the number of iterations that will be run: iterMax
	 */

	iterMax = 0;
	listTmpDepth = numLists-1;
	for (i = 0;  i < numLists;  i++) {
	    varListPtr = infoPtr->varLists[i];
	    numVars = varListPtr->numVars;
	    listPtr = OBJ_AT_DEPTH(listTmpDepth);
	    if (TclListObjLength(interp, listPtr, &listLen) != TCL_OK) {
		TRACE_APPEND(("ERROR converting list %ld, \"%s\": %s",
			i, O2S(listPtr), O2S(Tcl_GetObjResult(interp))));
		goto gotError;
	    }
	    if (Tcl_IsShared(listPtr)) {
		objPtr = TclListObjCopy(NULL, listPtr);
		Tcl_IncrRefCount(objPtr);
		Tcl_DecrRefCount(listPtr);
		OBJ_AT_DEPTH(listTmpDepth) = objPtr;

	 * Store a pointer to the ForeachInfo struct; same dirty trick
	 * as above
	 */

	TclNewObj(tmpPtr);
	tmpPtr->internalRep.otherValuePtr = infoPtr;
	PUSH_OBJECT(tmpPtr); /* infoPtr object */
	TRACE_APPEND(("jump to loop step\n"));

	/*
	 * Jump directly to the INST_FOREACH_STEP instruction; the C code just
	 * falls through.
	 */

	pc += 5 - infoPtr->loopCtTemp;

    case INST_FOREACH_STEP:
	/*
	 * "Step" a foreach loop (i.e., begin its next iteration) by assigning
	 * the next value list element to each loop var.
	 */

	tmpPtr = OBJ_AT_TOS;
	infoPtr = tmpPtr->internalRep.otherValuePtr;
	numLists = infoPtr->numLists;
	TRACE(("=> "));

	tmpPtr = OBJ_AT_DEPTH(1);
	iterNum = PTR2INT(tmpPtr->internalRep.twoPtrValue.ptr1);
	iterMax = PTR2INT(tmpPtr->internalRep.twoPtrValue.ptr2);

	/*
	 * If some list still has a remaining list element iterate one more

			    Tcl_IncrRefCount(valuePtr);
			}
		    } else {
			DECACHE_STACK_INFO();
			if (TclPtrSetVar(interp, varPtr, NULL, NULL, NULL,
				valuePtr, TCL_LEAVE_ERR_MSG, varIndex)==NULL){
			    CACHE_STACK_INFO();

			    TRACE_APPEND(("ERROR init. index temp %d: %.30s",
				    varIndex, O2S(Tcl_GetObjResult(interp))));
			    goto gotError;
			}
			CACHE_STACK_INFO();
		    }
		    valIndex++;
		}
		listTmpDepth--;
	    }
	    TRACE_APPEND(("jump to loop start\n"));
	    /* loopCtTemp being 'misused' for storing the jump size */
	    NEXT_INST_F(infoPtr->loopCtTemp, 0, 0);
	}

	TRACE_APPEND(("loop has no more iterations\n"));
#ifdef TCL_COMPILE_DEBUG
	NEXT_INST_F(1, 0, 0);
#else
	/*
	 * FALL THROUGH
	 */
	pc++;
#endif

    case INST_FOREACH_END:
	/* THIS INSTRUCTION IS ONLY CALLED AS A BREAK TARGET */
	tmpPtr = OBJ_AT_TOS;
	infoPtr = tmpPtr->internalRep.otherValuePtr;
	numLists = infoPtr->numLists;
	TRACE(("=> loop terminated\n"));
	NEXT_INST_V(1, numLists+2, 0);

    case INST_LMAP_COLLECT:
	/*
	 * This instruction is only issued by lmap. The stack is:
	 *   - result
	 *   - infoPtr
	 *   - loop counters
	 *   - valLists
	 *   - collecting obj (unshared)
	 * The instruction lappends the result to the collecting obj.
	 */

	tmpPtr = OBJ_AT_DEPTH(1);
	infoPtr = tmpPtr->internalRep.otherValuePtr;
	numLists = infoPtr->numLists;
	TRACE_APPEND(("=> appending to list at depth %d\n", 3 + numLists));
	
	objPtr = OBJ_AT_DEPTH(3 + numLists);
	Tcl_ListObjAppendElement(NULL, objPtr, OBJ_AT_TOS);
	NEXT_INST_F(1, 1, 0);
    }

    case INST_BEGIN_CATCH4:

	}
	if (code == TCL_OK) {
	    Tcl_Panic("INST_RETURN_CODE_BRANCH: TOS is TCL_OK!");
	}
	if (code < TCL_ERROR || code > TCL_CONTINUE) {
	    code = TCL_CONTINUE + 1;
	}
	TRACE(("\"%s\" => jump offset %d\n", O2S(OBJ_AT_TOS), 2*code-1));
	NEXT_INST_F(2*code-1, 1, 0);
    }

    /*
     * -----------------------------------------------------------------
     *	   Start of dictionary-related instructions.
     */

    {
	int opnd2, allocateDict, done, i, allocdict;
	Tcl_Obj *dictPtr, *statePtr, *keyPtr, *listPtr, *varNamePtr, *keysPtr;
	Tcl_Obj *emptyPtr, **keyPtrPtr;
	Tcl_DictSearch *searchPtr;
	DictUpdateInfo *duiPtr;

    case INST_DICT_VERIFY:
	dictPtr = OBJ_AT_TOS;
	TRACE(("\"%.30s\" => ", O2S(dictPtr)));
	if (Tcl_DictObjSize(interp, dictPtr, &done) != TCL_OK) {
	    TRACE_APPEND(("ERROR verifying dictionary nature of \"%.30s\": %s\n",
		    O2S(dictPtr), O2S(Tcl_GetObjResult(interp))));
	    goto gotError;
	}
	TRACE_APPEND(("OK\n"));
	NEXT_INST_F(1, 1, 0);

    case INST_DICT_GET:
    case INST_DICT_EXISTS: {

		    &OBJ_AT_DEPTH(opnd-1), DICT_PATH_READ);
	    if (dictPtr == NULL) {
		if (*pc == INST_DICT_EXISTS) {
		    found = 0;
		    goto afterDictExists;
		}
		TRACE_WITH_OBJ((
			"ERROR tracing dictionary path into \"%.30s\": ",
			O2S(OBJ_AT_DEPTH(opnd))),
			Tcl_GetObjResult(interp));
		goto gotError;
	    }
	}
	if (Tcl_DictObjGet(interp2, dictPtr, OBJ_AT_TOS,
		&objResultPtr) == TCL_OK) {
	    if (*pc == INST_DICT_EXISTS) {
		found = (objResultPtr ? 1 : 0);
		goto afterDictExists;
	    }
	    if (!objResultPtr) {

		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"key \"%s\" not known in dictionary",
			TclGetString(OBJ_AT_TOS)));
		DECACHE_STACK_INFO();
		Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "DICT",
			TclGetString(OBJ_AT_TOS), NULL);
		CACHE_STACK_INFO();
		TRACE_ERROR(interp);
		goto gotError;
	    }
	    TRACE_APPEND(("%.30s\n", O2S(objResultPtr)));
	    NEXT_INST_V(5, opnd+1, 1);
	} else if (*pc != INST_DICT_EXISTS) {
	    TRACE_APPEND(("ERROR reading leaf dictionary key \"%.30s\": %s",
		    O2S(dictPtr), O2S(Tcl_GetObjResult(interp))));
	    goto gotError;
	} else {
	    found = 0;
	}
    afterDictExists:
	TRACE_APPEND(("%d\n", found));

	/*
	 * The INST_DICT_EXISTS instruction is usually followed by a
	 * conditional jump, so we can take advantage of this to do some
	 * peephole optimization (note that we're careful to not close out
	 * someone doing something else).
	 */


















	JUMP_PEEPHOLE_V(found, 5, opnd+1);
    }

    case INST_DICT_SET:
    case INST_DICT_UNSET:
    case INST_DICT_INCR_IMM:
	opnd = TclGetUInt4AtPtr(pc+1);
	opnd2 = TclGetUInt4AtPtr(pc+5);

	    Tcl_Panic("Should not happen!");
	}

	if (result != TCL_OK) {
	    if (allocateDict) {
		TclDecrRefCount(dictPtr);
	    }
	    TRACE_APPEND(("ERROR updating dictionary: %s\n",
		    O2S(Tcl_GetObjResult(interp))));
	    goto checkForCatch;
	}

	if (TclIsVarDirectWritable(varPtr)) {
	    if (allocateDict) {
		value2Ptr = varPtr->value.objPtr;
		Tcl_IncrRefCount(dictPtr);

	    TclNewObj(emptyPtr);
	    PUSH_OBJECT(emptyPtr);
	    PUSH_OBJECT(emptyPtr);
	} else {
	    PUSH_OBJECT(valuePtr);
	    PUSH_OBJECT(keyPtr);
	}
	TRACE_APPEND(("\"%.30s\" \"%.30s\" %d\n",
		O2S(OBJ_UNDER_TOS), O2S(OBJ_AT_TOS), done));


	/*
	 * The INST_DICT_FIRST and INST_DICT_NEXT instructsions are always
	 * followed by a conditional jump, so we can take advantage of this to
	 * do some peephole optimization (note that we're careful to not close
	 * out someone doing something else).
	 */
















	JUMP_PEEPHOLE_F(done, 5, 0);






    case INST_DICT_UPDATE_START:
	opnd = TclGetUInt4AtPtr(pc+1);
	opnd2 = TclGetUInt4AtPtr(pc+5);
	TRACE(("%u => ", opnd));
	varPtr = LOCAL(opnd);
	duiPtr = codePtr->auxDataArrayPtr[opnd2].clientData;

	}
	TRACE_APPEND(("written back\n"));
	NEXT_INST_F(9, 1, 0);

    case INST_DICT_EXPAND:
	dictPtr = OBJ_UNDER_TOS;
	listPtr = OBJ_AT_TOS;
	TRACE(("\"%.30s\" \"%.30s\" =>", O2S(dictPtr), O2S(listPtr)));
	if (TclListObjGetElements(interp, listPtr, &objc, &objv) != TCL_OK) {
	    TRACE_ERROR(interp);
	    goto gotError;
	}
	objResultPtr = TclDictWithInit(interp, dictPtr, objc, objv);
	if (objResultPtr == NULL) {
	    TRACE_ERROR(interp);
	    goto gotError;
	}
	TRACE_APPEND(("\"%.30s\"\n", O2S(objResultPtr)));
	NEXT_INST_F(1, 2, 1);

    case INST_DICT_RECOMBINE_STK:
	keysPtr = POP_OBJECT();
	varNamePtr = OBJ_UNDER_TOS;
	listPtr = OBJ_AT_TOS;
	TRACE(("\"%.30s\" \"%.30s\" \"%.30s\" => ",

		    rangePtr->codeOffset, rangePtr->continueOffset));
	    NEXT_INST_F(0, 0, 0);
	}
#ifdef TCL_COMPILE_DEBUG
	if (traceInstructions) {
	    objPtr = Tcl_GetObjResult(interp);
	    if ((result != TCL_ERROR) && (result != TCL_RETURN)) {
		TRACE_APPEND(("OTHER RETURN CODE %d, result=\"%.30s\"\n ",
			result, O2S(objPtr)));
	    } else {
		TRACE_APPEND(("%s, result=\"%.30s\"\n",
			StringForResultCode(result), O2S(objPtr)));
	    }
	}
#endif
	goto checkForCatch;

	/*
	 * Division by zero in an expression. Control only reaches this point
	 * by "goto divideByZero".
	 */

    divideByZero:

	Tcl_SetObjResult(interp, Tcl_NewStringObj("divide by zero", -1));
	DECACHE_STACK_INFO();
	Tcl_SetErrorCode(interp, "ARITH", "DIVZERO", "divide by zero", NULL);
	CACHE_STACK_INFO();
	goto gotError;

	/*
	 * Exponentiation of zero by negative number in an expression. Control
	 * only reaches this point by "goto exponOfZero".
	 */

    exponOfZero:

	Tcl_SetObjResult(interp, Tcl_NewStringObj(
		"exponentiation of zero by negative power", -1));
	DECACHE_STACK_INFO();
	Tcl_SetErrorCode(interp, "ARITH", "DOMAIN",
		"exponentiation of zero by negative power", NULL);
	CACHE_STACK_INFO();

	/*
	 * Almost all error paths feed through here rather than assigning to
	 * result themselves (for a small but consistent saving).

tclLoadDl2.o: $(UNIX_DIR)/tclLoadDl2.c
	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDl2.c

tclLoadDld.o: $(UNIX_DIR)/tclLoadDld.c
	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDld.c

tclLoadDyld.o: $(UNIX_DIR)/tclLoadDyld.c
	@echo Warnings are expected from compiling tclLoadDyld.c: deprecated API use
	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadDyld.c

tclLoadNone.o: $(GENERIC_DIR)/tclLoadNone.c
	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tclLoadNone.c

tclLoadOSF.o: $(UNIX_DIR)/tclLoadOSF.c
	$(CC) -c $(CC_SWITCHES) $(UNIX_DIR)/tclLoadOSF.c