collapse_vars: Do not consider RegExp literals to be constants

Fixes #1100
2016-05-26 14:47:16 -04:00
parent 1e390269d4
commit 09d5707a8a
2 changed files with 57 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -338,7 +338,7 @@ merge(Compressor.prototype, {
                    if (ref.scope.uses_eval || ref.scope.uses_with) break;

                    // Constant single use vars can be replaced in any scope.
-                    if (var_decl.value.is_constant(compressor)) {
+                    if (!(var_decl.value instanceof AST_RegExp) && var_decl.value.is_constant(compressor)) {
                        var ctt = new TreeTransformer(function(node) {
                            if (node === ref)
                                return replace_var(node, ctt.parent(), true);