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List of issues#2473 Always-break loops containing breaks handled incorrectly
Author: 
JPEXS
JPEXSDate created:
Type: bug
Visibility: Everybody
Assigned to:
Labels: AS1/2AS3Decompilation
State: opened 
> What steps will reproduce the problem?
Compile (in FFDec for example) following AS1 code:
```
while(true)
{
var v = 5;
trace("a");
if(v > 4)
{
trace("b");
if(v > 10)
{
trace("c");
break; //standard "break", should lead to "f"
}
else
{
trace("d");
}
}
trace("e");
break; //"always break loop"
}
trace("f");
```
> What is the expected output? What do you see instead?
I see following:
```
if(true)
{
var v = 5;
trace("a");
if(v > 4)
{
trace("b");
if(v > 10)
{
trace("c");
}
else
{
trace("d");
}
}
trace("e");
}
trace("f");
```
The block "c" continues to block "e".
Expected: "c" should continue to block "f", not "e".
There should be break statement or equivalent.
The while(true) or similar "goto forward" breakable structure should be generated.
> What version of the product are you using? Is it "nightly build"? Which operating system
do you have?
23.0.1 nightly 3210, Windows 11
> Please provide any additional information below. If the problem is related to a SWF
file, attach it here, otherwise we can't help you.
In 24.0.1 nightly 3221, it decompiles as:
```
if(true)
{
var v = 5;
trace("a");
if(v > 4)
{
trace("b");
if(v > 10)
{
trace("c");
}
else
{
trace("d");
addr28:
trace("e");
}
§§goto(addr31);
}
§§goto(addr28);
}
addr31:
trace("f");
```
Which is formally correct, as all control flow is same as original.
It still needs some polishing - to remove the §§goto statement and introduce
always-break while loop.
State: new→opened