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-rw-r--r--generic/tclCompCmdsSZ.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclCompCmdsSZ.c b/generic/tclCompCmdsSZ.c
index 243f8a9..b16b8b3 100644
--- a/generic/tclCompCmdsSZ.c
+++ b/generic/tclCompCmdsSZ.c
@@ -1350,7 +1350,7 @@ static int
UniCharIsHexDigit(
int character)
{
- return (character >= 0) && (character < 0x80) && isxdigit(character);
+ return (character >= 0) && (character < 0x80) && isxdigit(UCHAR(character));
}
StringClassDesc const tclStringClassTable[] = {