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-rw-r--r--generic/tclIO.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclIO.c b/generic/tclIO.c
index 7216423..57a934b 100644
--- a/generic/tclIO.c
+++ b/generic/tclIO.c
@@ -5405,7 +5405,7 @@ ReadChars(
* for sizing receiving buffers.
*/
- int toRead = ((unsigned) charsToRead > srcLen) ? srcLen : charsToRead;
+ int toRead = ((unsigned) charsToRead > (unsigned) srcLen) ? srcLen : charsToRead;
/*
* 'factor' is how much we guess that the bytes in the source buffer will