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-rw-r--r--generic/tclCompCmds.c2
-rw-r--r--generic/tclInt.h1
-rw-r--r--generic/tclResult.c23
3 files changed, 25 insertions, 1 deletions
diff --git a/generic/tclCompCmds.c b/generic/tclCompCmds.c
index 083f530..66c03ab 100644
--- a/generic/tclCompCmds.c
+++ b/generic/tclCompCmds.c
@@ -3644,7 +3644,7 @@ TclCompileSyntaxError(
TclErrorStackResetIf(interp, bytes, numBytes);
TclEmitPush(TclRegisterNewLiteral(envPtr, bytes, numBytes), envPtr);
CompileReturnInternal(envPtr, INST_SYNTAX, TCL_ERROR, 0,
- Tcl_GetReturnOptions(interp, TCL_ERROR));
+ TclNoErrorStack(interp, Tcl_GetReturnOptions(interp, TCL_ERROR)));
}
/*
diff --git a/generic/tclInt.h b/generic/tclInt.h
index e4a7782..9f00077 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -3016,6 +3016,7 @@ MODULE_SCOPE int TclMaxListLength(const char *bytes, int numBytes,
MODULE_SCOPE int TclMergeReturnOptions(Tcl_Interp *interp, int objc,
Tcl_Obj *const objv[], Tcl_Obj **optionsPtrPtr,
int *codePtr, int *levelPtr);
+MODULE_SCOPE Tcl_Obj * TclNoErrorStack(Tcl_Interp *interp, Tcl_Obj *options);
MODULE_SCOPE int TclNokia770Doubles(void);
MODULE_SCOPE void TclNsDecrRefCount(Namespace *nsPtr);
MODULE_SCOPE void TclObjVarErrMsg(Tcl_Interp *interp, Tcl_Obj *part1Ptr,
diff --git a/generic/tclResult.c b/generic/tclResult.c
index 60bae73..4443cc1 100644
--- a/generic/tclResult.c
+++ b/generic/tclResult.c
@@ -1599,6 +1599,29 @@ Tcl_GetReturnOptions(
/*
*-------------------------------------------------------------------------
*
+ * TclNoErrorStack --
+ *
+ * Removes the -errorstack entry from an options dict to avoid reference cycles
+ *
+ * Results:
+ * The (unshared) argument options dict, modified in -place.
+ *
+ *-------------------------------------------------------------------------
+ */
+
+Tcl_Obj *
+TclNoErrorStack(Tcl_Interp *interp, Tcl_Obj *options)
+{
+ Tcl_Obj **keys = GetKeys();
+
+ Tcl_DictObjRemove(interp, options, keys[KEY_ERRORSTACK]);
+
+ return options;
+}
+
+/*
+ *-------------------------------------------------------------------------
+ *
* Tcl_SetReturnOptions --
*
* Accepts an interp and a dictionary of return options, and sets the