1 files changed, 10 insertions, 11 deletions
diff --git a/quickjs.c b/quickjs.c
index 4837885..35211d6 100644
--- a/quickjs.c
+++ b/quickjs.c
@@ -47816,20 +47816,19 @@ static JSValue set_date_field(JSContext *ctx, JSValueConst this_val,
     res = get_date_fields(ctx, this_val, fields, is_local, first_field == 0);
     if (res < 0)
         return JS_EXCEPTION;
+
+    // Argument coercion is observable and must be done unconditionally.
+    n = min_int(argc, end_field - first_field);
+    for(i = 0; i < n; i++) {
+        if (JS_ToFloat64(ctx, &a, argv[i]))
+            return JS_EXCEPTION;
+        if (!isfinite(a))
+            res = FALSE;
+        fields[first_field + i] = trunc(a);
+    }
     if (res && argc > 0) {
-        n = end_field - first_field;
-        if (argc < n)
-            n = argc;
-        for(i = 0; i < n; i++) {
-            if (JS_ToFloat64(ctx, &a, argv[i]))
-                return JS_EXCEPTION;
-            if (!isfinite(a))
-                goto done;
-            fields[first_field + i] = trunc(a);
-        }
         d = set_date_fields(fields, is_local);
     }
-done:
     return JS_SetThisTimeValue(ctx, this_val, d);
 }