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Compile-time check that control_event_t.event_mask is big enough

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Add a compile-time check that the number of events doesn't exceed
the capacity of control_event_t.event_mask.
This commit is contained in:
teor 2015-03-22 14:25:42 +11:00
parent 99c10a95e4
commit b41a5039f1
2 changed files with 7 additions and 1 deletions
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4
changes/ticket15431
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@ -1,4 +1,6 @@
o Minor features (testing):
- Add unit tests for control_event_is_interesting().
Part of ticket 15431, checks for bugs similar to 13085.
Add a compile-time check that the number of events doesn't exceed
the capacity of control_event_t.event_mask.
Closes ticket 15431, checks for bugs similar to 13085.
Patch by "teor".

4
src/or/control.h
View File

@ -166,6 +166,10 @@ void control_free_all(void);
/* If EVENT_MAX_ ever hits 0x0040, we need to make the mask into a
* different structure, as it can only handle a maximum left shift of 1<<63. */
#if EVENT_MAX_ >= EVENT_CAPACITY_
#error control_connection_t.event_mask has an event greater than its capacity
#endif
#define EVENT_MASK_(e) (((uint64_t)1)<<(e))
#define EVENT_MASK_NONE_ ((uint64_t)0x0)