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fix corner case in merge_vars (#4957)

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fixes #4956
This commit is contained in:
Alex Lam S.L
2021-05-24 02:56:02 +01:00
committed by GitHub
parent 8b0c836515
commit eb08fed120
3 changed files with 79 additions and 2 deletions
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77
test/compress/merge_vars.js
View File

@@ -3301,3 +3301,80 @@ issue_4761: {
}
expect_stdout: "undefined"
}
issue_4956_1: {
options = {
merge_vars: true,
toplevel: true,
}
input: {
var a, b;
function f(c) {
switch (c) {
case 0:
a = { p: 42 };
case 1:
b = a.p;
console.log(b);
}
}
f(0);
f(1);
}
expect: {
var a, b;
function f(c) {
switch (c) {
case 0:
a = { p: 42 };
case 1:
b = a.p;
console.log(b);
}
}
f(0);
f(1);
}
expect_stdout: [
"42",
"42",
]
}
issue_4956_2: {
options = {
merge_vars: true,
toplevel: true,
}
input: {
var a, b;
function f(c) {
if (0 == c) {
console;
a = { p: 42 };
}
b = a.p;
if (1 == c)
console.log(b);
}
f(0);
f(1);
}
expect: {
var a, b;
function f(c) {
if (0 == c) {
console;
a = { p: 42 };
}
b = a.p;
if (1 == c)
console.log(b);
}
f(0);
f(1);
}
expect_stdout: "42"
}

2
test/sandbox.js
View File

@@ -27,7 +27,7 @@ exports.run_code = semver.satisfies(process.version, "0.8") ? function(code, top
} : semver.satisfies(process.version, "<0.12") ? run_code_vm : function(code, toplevel, timeout) {
if ([
/\basync[ \t]*\([\s\S]*?\)[ \t]*=>/,
/\b(async[ \t]+function|setImmediate|setInterval|setTimeout)\b/,
/\b(async[ \t]+function|Promise|setImmediate|setInterval|setTimeout)\b/,
/\basync([ \t]+|[ \t]*#|[ \t]*\*[ \t]*)[^\s()[\]{},.&|!~=*%/+-]+(\s*\(|[ \t]*=>)/,
].some(function(pattern) {
return pattern.test(code);