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-rw-r--r--unix/tclUnixChan.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 1d60340..89c9a27 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -1647,6 +1647,11 @@ TclpOpenFileChannel(
native = Tcl_FSGetNativePath(pathPtr);
if (native == NULL) {
+ if (interp != (Tcl_Interp *) NULL) {
+ Tcl_AppendResult(interp, "couldn't open \"",
+ TclGetString(pathPtr), "\": filename is invalid on this platform",
+ NULL);
+ }
return NULL;
}