Symbian "error: Jump to case label"

When I compile my program, it is okay to compile it on the simulator. However, the compilation fails when it is switched to the phone release (gcce) environment, and common descriptors such as tbuf, which are usually defined at ordinary times, are also incorrect. The reason for finding them online is that there is a problem during the switch case, when case is a statement, you can

Switch (XXXX)
{
Case yyy:

Zzz;
Break;
Case yyy:
Zzz;
Break;

Default:
Break;
}

But when the case statement is larger than one, we should pay attention to it. At this time, when compiling on the real machine, it is:

Switch (XXXX)
{
Case yyy :{

Zzz;

AAA;

Bbb

}
Break;
Case yyy :{
Zzz;

AAA;

BBB;

}
Break;

Default:
Break;
}

{} Must be added.