fix corner case in reduce_funcs (#3592)

2019-11-17 11:19:42 +08:00
parent 10c1a78772
commit 8504a4ea0e
2 changed files with 120 additions and 32 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -5369,6 +5369,7 @@ merge(Compressor.prototype, {
                && !fn.contains_this()
                && can_inject_symbols()) {
                fn._squeezed = true;
+                if (exp !== fn) fn.parent_scope = exp.scope;
                return make_sequence(self, flatten_fn()).optimize(compressor);
            }
            if (compressor.option("side_effects")
@@ -6382,6 +6383,7 @@ merge(Compressor.prototype, {
                        } while (scope = scope.parent_scope);
                    }
                }
+                if (single_use) fixed.parent_scope = self.scope;
            }
            if (single_use && fixed) {
                def.single_use = false;