fix corner case in `evaluate` (#3904)

fixes #3903

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/compress.js b/lib/compress.js
index 986bed38..02d36d6c 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -3571,6 +3571,7 @@ merge(Compressor.prototype, {
                 var args = eval_args(this.args);
                 if (!args && !ignore_side_effects) return this;
                 if (!stat.value) return;
+                var cached_args = [];
                 if (args && !all(fn.argnames, function(sym, i) {
                     var value = args[i];
                     var def = sym.definition();
@@ -3579,13 +3580,16 @@ merge(Compressor.prototype, {
                         node._eval = function() {
                             return value;
                         };
-                        cached.push(node);
+                        cached_args.push(node);
                     });
                     return true;
                 }) && !ignore_side_effects) return this;
                 fn.evaluating = true;
                 var val = stat.value._eval(compressor, ignore_side_effects, cached, depth);
                 delete fn.evaluating;
+                cached_args.forEach(function(node) {
+                    delete node._eval;
+                });
                 if (val === stat.value) return this;
                 return val;
             } else if (compressor.option("unsafe") && exp instanceof AST_PropAccess) {