JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix corner case in arguments (#3330)

Browse Source 
Track modifications to `arguments[i]` under Strict Mode.

fixes #3273
This commit is contained in:
Alex Lam S.L
2019-03-13 06:59:53 +08:00
committed by GitHub
parent c6fa39b482
commit e250396d7e
2 changed files with 188 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

167
test/compress/arguments.js
View File

@@ -237,3 +237,170 @@ duplicate_argname: {
}
expect_stdout: "bar 42 foo 42 bar"
}
issue_3273: {
options = {
arguments: true,
}
input: {
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
function f(a) {
console.log(a, a);
a++;
console.log(a, a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 1",
]
}
issue_3273_reduce_vars: {
options = {
arguments: true,
reduce_vars: true,
}
input: {
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
function f(a) {
console.log(a, a);
a++;
console.log(a, a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 1",
]
}
issue_3273_local_strict: {
options = {
arguments: true,
}
input: {
function f(a) {
"use strict";
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
function f(a) {
"use strict";
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 0",
]
}
issue_3273_local_strict_reduce_vars: {
options = {
arguments: true,
reduce_vars: true,
}
input: {
function f(a) {
"use strict";
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
function f(a) {
"use strict";
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 0",
]
}
issue_3273_global_strict: {
options = {
arguments: true,
}
input: {
"use strict";
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
"use strict";
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 0",
]
}
issue_3273_global_strict_reduce_vars: {
options = {
arguments: true,
reduce_vars: true,
}
input: {
"use strict";
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect: {
"use strict";
function f(a) {
console.log(arguments[0], a);
arguments[0]++;
console.log(arguments[0], a);
}
f(0);
}
expect_stdout: [
"0 0",
"1 0",
]
}