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fallthrough should not execute case expression (#1683)

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- de-duplicate trailing cases only, avoid all potential side-effects
- enable switch statement fuzzing

fixes #1680
This commit is contained in:
Alex Lam S.L
2017-03-26 16:52:38 +08:00
committed by GitHub
parent 5509e51098
commit 3276740779
3 changed files with 83 additions and 22 deletions
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80
test/compress/switch.js
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@@ -23,7 +23,6 @@ constant_switch_2: {
}
expect: {
foo();
2;
bar();
}
}
@@ -118,7 +117,6 @@ constant_switch_6: {
x();
if (foo) break OUT;
y();
2;
bar();
}
}
@@ -157,7 +155,6 @@ constant_switch_7: {
console.log(x);
}
y();
2;
bar();
}
}
@@ -206,7 +203,6 @@ constant_switch_9: {
x();
for (;;) if (foo) break OUT;
y();
2;
bar();
def();
}
@@ -481,3 +477,79 @@ issue_1679: {
}
expect_stdout: true
}
issue_1680_1: {
options = {
dead_code: true,
evaluate: true,
}
input: {
function f(x) {
console.log(x);
return x + 1;
}
switch (2) {
case f(0):
case f(1):
f(2);
case 2:
case f(3):
case f(4):
f(5);
}
}
expect: {
function f(x) {
console.log(x);
return x + 1;
}
switch (2) {
case f(0):
case f(1):
f(2);
case 2:
f(5);
}
}
expect_stdout: [
"0",
"1",
"2",
"5",
]
}
issue_1680_2: {
options = {
dead_code: true,
}
input: {
var a = 100, b = 10;
switch (b) {
case a--:
break;
case b:
var c;
break;
case a:
break;
case a--:
break;
}
console.log(a, b);
}
expect: {
var a = 100, b = 10;
switch (b) {
case a--:
break;
case b:
var c;
break;
case a:
case a--:
}
console.log(a, b);
}
expect_stdout: true
}