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fix corner case in collapse_vars (#4061)

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This commit is contained in:
Alex Lam S.L
2020-08-21 03:35:34 +01:00
committed by GitHub
parent aa83ecdb3b
commit fee677786e
2 changed files with 94 additions and 15 deletions
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74
test/compress/collapse_vars.js
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@@ -1599,7 +1599,7 @@ collapse_vars_constants: {
}
}
collapse_vars_arguments: {
collapse_vars_arguments_1: {
options = {
booleans: true,
collapse_vars: true,
@@ -1636,6 +1636,78 @@ collapse_vars_arguments: {
expect_stdout: true
}
collapse_vars_arguments_2: {
options = {
collapse_vars: true,
}
input: {
function log(a, b) {
console.log(b);
}
function f(c) {
var d = arguments[0];
c = "FAIL";
log(c, d);
}
f();
f("PASS");
}
expect: {
function log(a, b) {
console.log(b);
}
function f(c) {
var d = arguments[0];
log(c = "FAIL", d);
}
f();
f("PASS");
}
expect_stdout: [
"undefined",
"PASS",
]
}
collapse_vars_arguments_3: {
options = {
collapse_vars: true,
}
input: {
function log(a, b) {
console.log(b);
}
function f(c) {
var args = arguments;
console.log(c);
var d = args[0];
c = "FAIL";
log(c, d);
}
f();
f("PASS");
}
expect: {
function log(a, b) {
console.log(b);
}
function f(c) {
var args = arguments;
console.log(c);
var d = args[0];
log(c = "FAIL", d);
}
f();
f("PASS");
}
expect_stdout: [
"undefined",
"undefined",
"PASS",
"PASS",
]
}
collapse_vars_short_circuit: {
options = {
booleans: true,