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-rw-r--r--generic/tclScan.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/tclScan.c b/generic/tclScan.c
index 78fd3be..67138e6 100644
--- a/generic/tclScan.c
+++ b/generic/tclScan.c
@@ -945,7 +945,7 @@ Tcl_ScanObjCmd(
int code = Tcl_GetBignumFromObj(interp, objPtr, &big);
if (code == TCL_OK) {
- if (big.sign != MP_ZPOS) {
+ if (mp_isneg(&big)) {
code = TCL_ERROR;
}
mp_clear(&big);