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fix deep cloning of AST_LabeledStatement

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Need to update reference to label's definition as well.

fixes #1833
This commit is contained in:
alexlamsl 2017-04-21 02:55:31 +08:00
parent f05d4f7af3
commit f071a783c6
2 changed files with 108 additions and 4 deletions
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9
lib/ast.js
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@ -206,12 +206,13 @@ var AST_LabeledStatement = DEFNODE("LabeledStatement", "label", {
clone: function(deep) {
var node = this._clone(deep);
if (deep) {
var refs = node.label.references;
var label = this.label;
var label = node.label;
var def = this.label;
node.walk(new TreeWalker(function(node) {
if (node instanceof AST_LoopControl
&& node.label && node.label.thedef === label) {
refs.push(node);
&& node.label && node.label.thedef === def) {
node.label.thedef = label;
label.references.push(node);
}
}));
}

103
test/compress/issue-1833.js Normal file
View File

@ -0,0 +1,103 @@
iife_for: {
options = {
negate_iife: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f() {
function g() {
L: for (;;) break L;
}
g();
}
f();
}
expect: {
!function() {
!function() {
L: for (;;) break L;
}();
}();
}
}
iife_for_in: {
options = {
negate_iife: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f() {
function g() {
L: for (var a in x) break L;
}
g();
}
f();
}
expect: {
!function() {
!function() {
L: for (var a in x) break L;
}();
}();
}
}
iife_do: {
options = {
negate_iife: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f() {
function g() {
L: do {
break L;
} while (1);
}
g();
}
f();
}
expect: {
!function() {
!function() {
L: do {
break L;
} while (1);
}();
}();
}
}
iife_while: {
options = {
negate_iife: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f() {
function g() {
L: while (1) break L;
}
g();
}
f();
}
expect: {
!function() {
!function() {
L: while (1) break L;
}();
}();
}
}