[1493a43044] Make [namespace upvar] ignore variable resolvers; the previous situation was completely unintuitive.

4 files changed, 40 insertions, 38 deletions

diff --git a/generic/tclExecute.c b/generic/tclExecute.c
index 1389382..8ddefda 100644
--- a/generic/tclExecute.c
+++ b/generic/tclExecute.c
@@ -4413,8 +4413,8 @@ TEBCresume(
 	savedNsPtr = iPtr->varFramePtr->nsPtr;
 	iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr;
 	otherPtr = TclObjLookupVarEx(interp, OBJ_AT_TOS, NULL,
-		(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
-		/*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
+		(TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG|TCL_AVOID_RESOLVERS),
+		"access", /*createPart1*/ 1, /*createPart2*/ 1, &varPtr);
 	iPtr->varFramePtr->nsPtr = savedNsPtr;
 	if (!otherPtr) {
 	    TRACE_ERROR(interp);
diff --git a/generic/tclInt.h b/generic/tclInt.h
index a6cc627..4f7ea6e 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -170,6 +170,21 @@ typedef struct Tcl_ResolverInfo {
 } Tcl_ResolverInfo;
 
 /*
+ * This flag bit should not interfere with TCL_GLOBAL_ONLY,
+ * TCL_NAMESPACE_ONLY, or TCL_LEAVE_ERR_MSG; it signals that the variable
+ * lookup is performed for upvar (or similar) purposes, with slightly
+ * different rules:
+ *    - Bug #696893 - variable is either proc-local or in the current
+ *	namespace; never follow the second (global) resolution path
+ *    - Bug #631741 - do not use special namespace or interp resolvers
+ *
+ * It should also not collide with the (deprecated) TCL_PARSE_PART1 flag
+ * (Bug #835020)
+ */
+
+#define TCL_AVOID_RESOLVERS 0x40000
+
+/*
  *----------------------------------------------------------------
  * Data structures related to namespaces.
  *----------------------------------------------------------------
diff --git a/generic/tclNamesp.c b/generic/tclNamesp.c
index 2c50a60..5930859 100644
--- a/generic/tclNamesp.c
+++ b/generic/tclNamesp.c
@@ -4538,8 +4538,8 @@ NamespaceUpvarCmd(
 	savedNsPtr = (Tcl_Namespace *) iPtr->varFramePtr->nsPtr;
 	iPtr->varFramePtr->nsPtr = (Namespace *) nsPtr;
 	otherPtr = TclObjLookupVarEx(interp, objv[0], NULL,
-		(TCL_NAMESPACE_ONLY | TCL_LEAVE_ERR_MSG), "access",
-		/*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
+		(TCL_NAMESPACE_ONLY|TCL_LEAVE_ERR_MSG|TCL_AVOID_RESOLVERS),
+		"access", /*createPart1*/ 1, /*createPart2*/ 1, &arrayPtr);
 	iPtr->varFramePtr->nsPtr = (Namespace *) savedNsPtr;
 	if (otherPtr == NULL) {
 	    return TCL_ERROR;
diff --git a/generic/tclVar.c b/generic/tclVar.c
index 51e2482..47c6e14 100644
--- a/generic/tclVar.c
+++ b/generic/tclVar.c
@@ -742,21 +742,6 @@ TclObjLookupVarEx(
 }
 
 /*
- * This flag bit should not interfere with TCL_GLOBAL_ONLY,
- * TCL_NAMESPACE_ONLY, or TCL_LEAVE_ERR_MSG; it signals that the variable
- * lookup is performed for upvar (or similar) purposes, with slightly
- * different rules:
- *    - Bug #696893 - variable is either proc-local or in the current
- *	namespace; never follow the second (global) resolution path
- *    - Bug #631741 - do not use special namespace or interp resolvers
- *
- * It should also not collide with the (deprecated) TCL_PARSE_PART1 flag
- * (Bug #835020)
- */
-
-#define AVOID_RESOLVERS 0x40000
-
-/*
  *----------------------------------------------------------------------
  *
  * TclLookupSimpleVar --
@@ -805,8 +790,8 @@ TclLookupSimpleVar(
     Tcl_Obj *varNamePtr,	/* This is a simple variable name that could
 				 * represent a scalar or an array. */
     int flags,			/* Only TCL_GLOBAL_ONLY, TCL_NAMESPACE_ONLY,
-				 * AVOID_RESOLVERS and TCL_LEAVE_ERR_MSG bits
-				 * matter. */
+				 * TCL_AVOID_RESOLVERS and TCL_LEAVE_ERR_MSG
+				 * bits matter. */
     const int create,		/* If 1, create hash table entry for varname,
 				 * if it doesn't already exist. If 0, return
 				 * error if it doesn't exist. */
@@ -846,7 +831,7 @@ TclLookupSimpleVar(
      */
 
     if ((cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL)
-	    && !(flags & AVOID_RESOLVERS)) {
+	    && !(flags & TCL_AVOID_RESOLVERS)) {
 	resPtr = iPtr->resolverPtr;
 	if (cxtNsPtr->varResProc) {
 	    result = cxtNsPtr->varResProc(interp, varName,
@@ -899,7 +884,7 @@ TclLookupSimpleVar(
 	    *indexPtr = -1;
 	    flags = (flags | TCL_GLOBAL_ONLY) & ~TCL_NAMESPACE_ONLY;
 	} else {
-	    if (flags & AVOID_RESOLVERS) {
+	    if (flags & TCL_AVOID_RESOLVERS) {
 		flags = (flags | TCL_NAMESPACE_ONLY);
 	    }
 	    if (flags & TCL_NAMESPACE_ONLY) {
@@ -914,7 +899,7 @@ TclLookupSimpleVar(
 
 	varPtr = (Var *) ObjFindNamespaceVar(interp, varNamePtr,
 		(Tcl_Namespace *) cxtNsPtr,
-		(flags | AVOID_RESOLVERS) & ~TCL_LEAVE_ERR_MSG);
+		(flags | TCL_AVOID_RESOLVERS) & ~TCL_LEAVE_ERR_MSG);
 	if (varPtr == NULL) {
 	    Tcl_Obj *tailPtr;
 
@@ -4396,15 +4381,15 @@ TclPtrObjMakeUpvar(
 
 	/*
 	 * Lookup and eventually create the new variable. Set the flag bit
-	 * AVOID_RESOLVERS to indicate the special resolution rules for upvar
-	 * purposes:
+	 * TCL_AVOID_RESOLVERS to indicate the special resolution rules for
+	 * upvar purposes:
 	 *   - Bug #696893 - variable is either proc-local or in the current
 	 *     namespace; never follow the second (global) resolution path.
 	 *   - Bug #631741 - do not use special namespace or interp resolvers.
 	 */
 
 	varPtr = TclLookupSimpleVar(interp, myNamePtr,
-		myFlags|AVOID_RESOLVERS, /* create */ 1, &errMsg, &index);
+		myFlags|TCL_AVOID_RESOLVERS, /* create */ 1, &errMsg, &index);
 	if (varPtr == NULL) {
 	    TclObjVarErrMsg(interp, myNamePtr, NULL, "create", errMsg, -1);
 	    Tcl_SetErrorCode(interp, "TCL", "LOOKUP", "VARNAME",
@@ -5695,11 +5680,12 @@ Tcl_FindNamespaceVar(
 				 * Otherwise, points to namespace in which to
 				 * resolve name. If NULL, look up name in the
 				 * current namespace. */
-    int flags)			/* An OR'd combination of: AVOID_RESOLVERS,
-				 * TCL_GLOBAL_ONLY (look up name only in
-				 * global namespace), TCL_NAMESPACE_ONLY (look
-				 * up only in contextNsPtr, or the current
-				 * namespace if contextNsPtr is NULL), and
+    int flags)			/* An OR'd combination of:
+				 * TCL_AVOID_RESOLVERS, TCL_GLOBAL_ONLY (look
+				 * up name only in global namespace),
+				 * TCL_NAMESPACE_ONLY (look up only in
+				 * contextNsPtr, or the current namespace if
+				 * contextNsPtr is NULL), and
 				 * TCL_LEAVE_ERR_MSG. If both TCL_GLOBAL_ONLY
 				 * and TCL_NAMESPACE_ONLY are given,
 				 * TCL_GLOBAL_ONLY is ignored. */
@@ -5725,11 +5711,12 @@ ObjFindNamespaceVar(
 				 * Otherwise, points to namespace in which to
 				 * resolve name. If NULL, look up name in the
 				 * current namespace. */
-    int flags)			/* An OR'd combination of: AVOID_RESOLVERS,
-				 * TCL_GLOBAL_ONLY (look up name only in
-				 * global namespace), TCL_NAMESPACE_ONLY (look
-				 * up only in contextNsPtr, or the current
-				 * namespace if contextNsPtr is NULL), and
+    int flags)			/* An OR'd combination of:
+				 * TCL_AVOID_RESOLVERS, TCL_GLOBAL_ONLY (look
+				 * up name only in global namespace),
+				 * TCL_NAMESPACE_ONLY (look up only in
+				 * contextNsPtr, or the current namespace if
+				 * contextNsPtr is NULL), and
 				 * TCL_LEAVE_ERR_MSG. If both TCL_GLOBAL_ONLY
 				 * and TCL_NAMESPACE_ONLY are given,
 				 * TCL_GLOBAL_ONLY is ignored. */
@@ -5759,7 +5746,7 @@ ObjFindNamespaceVar(
 	cxtNsPtr = (Namespace *) TclGetCurrentNamespace(interp);
     }
 
-    if (!(flags & AVOID_RESOLVERS) &&
+    if (!(flags & TCL_AVOID_RESOLVERS) &&
 	    (cxtNsPtr->varResProc != NULL || iPtr->resolverPtr != NULL)) {
 	resPtr = iPtr->resolverPtr;