fix, be strict in dateset --isvalid when input formats are present, f…

…ixes issue #146
hroptatyr · Jul 29, 2022 · 117d1f5 · 117d1f5
1 parent 042ae17
commit 117d1f5
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/src/dtest.c b/src/dtest.c
@@ -91,9 +91,12 @@ main(int argc, char *argv[])
 
 	if (argi->isvalid_flag) {
 		/* check that one date */
-		res = 1;
-		for (size_t i = 0; i < nifmt; i++) {
-			char *ep = NULL;
+		char *ep = NULL;
+
+		res = nifmt > 0U ||
+			dt_unk_p(dt_strpdt(*argi->args, NULL, &ep)) ||
+			ep == NULL || *ep;
+		for (size_t i = 0; i < nifmt; i++, ep = NULL) {
 			if (!dt_unk_p(dt_strpdt(*argi->args, ifmt[i], &ep)) &&
 			    ep && !*ep) {
 				res = 0;