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fix corner case in merge_vars (#4238)

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fixes #4237
This commit is contained in:
Alex Lam S.L
2020-10-24 03:19:43 +01:00
committed by GitHub
parent 9e40abeded
commit 8e86d05c32
2 changed files with 118 additions and 8 deletions
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81
test/compress/merge_vars.js
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@@ -3011,3 +3011,84 @@ issue_4168_use_strict: {
}
expect_stdout: "PASS true 42"
}
issue_4237_1: {
options = {
merge_vars: true,
}
input: {
console.log(function(a) {
do {
var b = a++;
if (b)
return "FAIL";
continue;
var c = 42;
} while ("undefined" != typeof c);
return "PASS";
}(0));
}
expect: {
console.log(function(a) {
do {
var b = a++;
if (b)
return "FAIL";
continue;
var c = 42;
} while ("undefined" != typeof c);
return "PASS";
}(0));
}
expect_stdout: "PASS"
}
issue_4237_2: {
options = {
dead_code: true,
evaluate: true,
loops: true,
merge_vars: true,
switches: true,
}
input: {
console.log(function(a) {
do {
switch (0) {
case 0:
var b = a++;
default:
while (b)
return "FAIL";
}
try {
var c = 0;
} finally {
continue;
}
var d = 0;
} while ("undefined" != typeof d);
return "PASS";
}(0));
}
expect: {
console.log(function(a) {
do {
switch (0) {
case 0:
var b = a++;
if (b)
return "FAIL";
}
try {
var c = 0;
} finally {
continue;
}
var d = 0;
} while ("undefined" != typeof d);
return "PASS";
}(0));
}
expect_stdout: "PASS"
}