handle circular function reference gracefully (#2446)

fixes #2442
2017-11-07 02:37:23 +08:00
parent 2cfb5aa7da
commit bbedbf4ea0
2 changed files with 204 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4242,8 +4242,19 @@ merge(Compressor.prototype, {
                d.fixed = fixed = make_node(AST_Function, fixed, fixed);
            }
            if (fixed && d.single_use) {
-                var value = fixed.optimize(compressor);
-                return value === fixed ? fixed.clone(true) : value;
+                var recurse;
+                if (fixed instanceof AST_Function) {
+                    for (var i = 0; recurse = compressor.parent(i); i++) {
+                        if (recurse instanceof AST_Lambda) {
+                            var name = recurse.name;
+                            if (name && name.definition() === d) break;
+                        }
+                    }
+                }
+                if (!recurse) {
+                    var value = fixed.optimize(compressor);
+                    return value === fixed ? fixed.clone(true) : value;
+                }
            }
            if (fixed && d.should_replace === undefined) {
                var init;