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fix corner case in reduce_vars (#5778)

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fixes #5777
This commit is contained in:
Alex Lam S.L
2023-01-16 15:30:45 +02:00
committed by GitHub
parent 57dd3f6a2c
commit a437a61518
2 changed files with 76 additions and 8 deletions
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10
lib/compress.js
View File

@@ -624,15 +624,9 @@ Compressor.prototype.compress = function(node) {
}
function pop_scope(tw, scope) {
var fn_defs = scope.fn_defs;
var tangled = scope.may_call_this === return_true ? fn_defs : fn_defs.filter(function(fn) {
if (fn.safe_ids === false) return true;
fn.safe_ids = tw.safe_ids;
walk_fn_def(tw, fn);
return false;
});
pop(tw);
tangled.forEach(function(fn) {
var fn_defs = scope.fn_defs;
fn_defs.forEach(function(fn) {
fn.safe_ids = tw.safe_ids;
walk_fn_def(tw, fn);
});

74
test/compress/reduce_vars.js
View File

@@ -8148,3 +8148,77 @@ issue_5730_3: {
}
expect_stdout: "PASS"
}
issue_5777_1: {
options = {
reduce_vars: true,
unused: true,
}
input: {
function f() {
(function(a) {
function g() {
h();
}
g();
a = function() {};
function h() {
console.log(a);
}
})("PASS");
}
f();
}
expect: {
function f() {
(function(a) {
(function() {
h();
})();
a = function() {};
function h() {
console.log(a);
}
})("PASS");
}
f();
}
expect_stdout: "PASS"
}
issue_5777_2: {
options = {
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
function f(a) {
(function() {
function g() {
h();
}
g();
a = function() {};
function h() {
console.log(a);
}
})();
}
f("PASS");
}
expect: {
(function(a) {
(function() {
(function() {
h();
})();
a = function() {};
function h() {
console.log(a);
}
})();
})("PASS");
}
expect_stdout: "PASS"
}