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-rw-r--r--generic/tclIO.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index 7814e32..4f676e6 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -10,7 +10,7 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tclIO.c,v 1.159 2009/02/10 22:49:45 nijtmans Exp $
+ * RCS: @(#) $Id: tclIO.c,v 1.160 2009/07/23 22:49:15 andreas_kupries Exp $
*/
#include "tclInt.h"
@@ -2085,6 +2085,14 @@ Tcl_GetChannelHandle(
int result;
chanPtr = ((Channel *) chan)->state->bottomChanPtr;
+ if (!chanPtr->typePtr->getHandleProc) {
+ Tcl_Obj* err;
+ TclNewLiteralStringObj(err, "channel \"");
+ Tcl_AppendToObj(err, Tcl_GetChannelName(chan), -1);
+ Tcl_AppendToObj(err, "\" does not support OS handles", -1);
+ Tcl_SetChannelError (chan,err);
+ return TCL_ERROR;
+ }
result = chanPtr->typePtr->getHandleProc(chanPtr->instanceData, direction,
&handle);
if (handlePtr) {