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fix corner case in reduce_vars & unused (#4465)

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fixes #4464
This commit is contained in:
Alex Lam S.L
2020-12-26 08:52:16 +00:00
committed by GitHub
parent be1f5199f4
commit 94f3819dc6
3 changed files with 87 additions and 6 deletions
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71
test/compress/drop-unused.js
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@@ -3125,3 +3125,74 @@ issue_4413: {
}
expect_stdout: "0"
}
issue_4464_1: {
options = {
reduce_vars: true,
unused: true,
}
input: {
function f(a) {
var a = function() {};
return [ arguments, a ];
}
console.log(typeof f()[1]);
}
expect: {
function f(a) {
a = function() {};
return [ arguments, a ];
}
console.log(typeof f()[1]);
}
expect_stdout: "function"
}
issue_4464_2: {
options = {
reduce_vars: true,
unused: true,
}
input: {
function f(a) {
var a = function() {};
return [ arguments, a ];
}
console.log(typeof f(42)[0][0]);
}
expect: {
function f(a) {
a = function() {};
return [ arguments, a ];
}
console.log(typeof f(42)[0][0]);
}
expect_stdout: "function"
}
issue_4464_3: {
options = {
reduce_vars: true,
unused: true,
}
input: {
(function a(a) {
var a = function() {};
return [ arguments[0], a ];
})(42).forEach(function(b) {
console.log(typeof b);
});
}
expect: {
(function(a) {
a = function() {};
return [ arguments[0], a ];
})(42).forEach(function(b) {
console.log(typeof b);
});
}
expect_stdout: [
"function",
"function",
]
}