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fix corner case in collapse_vars (#3239)

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fixes #3238
This commit is contained in:
Alex Lam S.L
2018-08-29 11:34:34 +08:00
committed by GitHub
parent 08514030f4
commit f352bcec3a
2 changed files with 237 additions and 48 deletions
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180
test/compress/collapse_vars.js
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@@ -5827,3 +5827,183 @@ issue_3215_4: {
}
expect_stdout: "number"
}
issue_3238_1: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = Object.create(null);
c = Object.create(null);
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = Object.create(null);
c = Object.create(null);
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}
issue_3238_2: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = Error();
c = Error();
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = Error();
c = Error();
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}
issue_3238_3: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = new Date();
c = new Date();
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = new Date();
c = new Date();
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}
issue_3238_4: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = a && {};
c = a && {};
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = a && {};
c = a && {};
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}
issue_3238_5: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = a ? [] : 42;
c = a ? [] : 42;
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = a ? [] : 42;
c = a ? [] : 42;
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}
issue_3238_6: {
options = {
collapse_vars: true,
unsafe: true,
}
input: {
function f(a) {
var b, c;
if (a) {
b = a && 0 || [];
c = a && 0 || [];
}
return b === c;
}
console.log(f(0), f(1));
}
expect: {
function f(a) {
var b, c;
if (a) {
b = a && 0 || [];
c = a && 0 || [];
}
return b === c;
}
console.log(f(0), f(1));
}
expect_stdout: "true false"
}