2018-05-16 03:27:59 +00:00
|
|
|
# algorithm
|
2018-05-12 13:48:05 +00:00
|
|
|
|
|
|
|
|
```c
|
|
|
|
|
// Every function pointer has a set contain the targets it's alias, the set is
|
2018-05-16 03:27:59 +00:00
|
|
|
// changed use static analysis of GCC can konwn it.
|
2018-05-12 13:48:05 +00:00
|
|
|
|
|
|
|
|
for every function pointer which has indirect call
|
|
|
|
|
legal_set = pointer alias set // changed along with reachable functions
|
|
|
|
|
if (legal_set->is_updated && function pointer used as indirect call)
|
|
|
|
|
compute new hash depened on the future of item of current legal_set
|
|
|
|
|
&& insert at every item of legal_set
|
|
|
|
|
// Now we have a new hash
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
*live long and prosper.*`
|
