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-rw-r--r--generic/tclUtil.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclUtil.c b/generic/tclUtil.c
index b00489d..f5c2926 100644
--- a/generic/tclUtil.c
+++ b/generic/tclUtil.c
@@ -410,7 +410,7 @@ TclMaxListLength(
bytes++;
numBytes -= (numBytes != -1);
} while (numBytes && TclIsSpaceProc(*bytes));
- if (numBytes == 0) {
+ if ((numBytes == 0) || ((numBytes == -1) && (*bytes == '\0'))) {
break;
}
/* (*bytes) is non-space; return to counting state */