fix corner case in collapse_vars (#4946)

2021-05-19 22:11:39 +01:00
parent d930c705f6
commit d6152e6a76
3 changed files with 37 additions and 2 deletions
--- a/test/reduce.js
+++ b/test/reduce.js
@@ -46,7 +46,7 @@ module.exports = function reduce_test(testcase, minify_options, reduce_options)
    if (verbose) {
        log("// Node.js " + process.version + " on " + os.platform() + " " + os.arch());
    }
-    if (differs.error && [ "DefaultsError", "SyntaxError" ].indexOf(differs.error.name) < 0) {
+    if (differs && differs.error && [ "DefaultsError", "SyntaxError" ].indexOf(differs.error.name) < 0) {
        test_for_diff = test_minify;
        differs = test_for_diff(testcase, minify_options, result_cache, max_timeout);
    }