}
if (node instanceof AST_SymbolRef) {
if (symbol_in_lvalues(node, parent)) {
- return !parent || parent.operator != "=" || parent.left !== node;
+ return !(parent instanceof AST_Assign && parent.operator == "=" && parent.left === node);
}
- return side_effects && may_modify(node);
+ if (side_effects && may_modify(node)) return true;
+ var def = node.definition();
+ return (in_try || def.scope.resolve() !== scope) && !all(def.orig, function(sym) {
+ return !(sym instanceof AST_SymbolConst);
+ });
}
if (node instanceof AST_This) return symbol_in_lvalues(node, parent);
if (node instanceof AST_VarDef) {
ok = sandbox.same_stdout(sandbox.run_code(sort_globals(original_code)), sandbox.run_code(sort_globals(uglify_code)));
}
// ignore numerical imprecision caused by `unsafe_math`
- if (!ok && typeof uglify_result == "string" && o.compress && o.compress.unsafe_math) {
+ if (!ok && o.compress && o.compress.unsafe_math && typeof original_result == "string" && typeof uglify_result == "string") {
ok = fuzzy_match(original_result, uglify_result);
if (!ok) {
var fuzzy_result = sandbox.run_code(original_code.replace(/( - 0\.1){3}/g, " - 0.3"), toplevel);