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-rw-r--r--generic/tclIO.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index dcde8d1..aea633c 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -6046,12 +6046,11 @@ ReadChars(
/*
* We read more chars than allowed. Reset limits to
* prevent that and try again. Don't forget the extra
- * padding of TCL_UTF_MAX - 1 bytes demanded by the
+ * padding of TCL_UTF_MAX bytes demanded by the
* Tcl_ExternalToUtf() call!
*/
- dstLimit = Tcl_UtfAtIndex(dst, charsToRead + 1)
- + TCL_UTF_MAX - 1 - dst;
+ dstLimit = Tcl_UtfAtIndex(dst, charsToRead) + TCL_UTF_MAX - dst;
statePtr->flags = savedFlags;
statePtr->inputEncodingFlags = savedIEFlags;
statePtr->inputEncodingState = savedState;