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-rw-r--r--generic/tclInt.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclInt.h b/generic/tclInt.h
index 98cab9b..75608ae 100644
--- a/generic/tclInt.h
+++ b/generic/tclInt.h
@@ -3705,7 +3705,7 @@ MODULE_SCOPE void TclZipfsFinalize(void);
MODULE_SCOPE int TclIsSpaceProc(int byte);
#define TclIsSpaceProcM(byte) \
- (((byte) > 0x20) ? 0 : TclIsSpaceProc(byte))
+ (((unsigned)(byte) > 0x20) ? 0 : TclIsSpaceProc(byte))
/*
*----------------------------------------------------------------