r218063 - Patch to check at compile time for overflow when

[jahanian]

On Sep 18, 2014, at 11:33 AM, Reid Kleckner <rnk at google.com> wrote:

> Cool! Do these warnings fire on plain memcpy if the system headers don't arrange for memcpy to route to __builtin__memcpy_chk? If so, can you add tests for plain prototyped memcpy as you did for strlcpy in the previous test?
> 

No they don’t. Note that __builtin__memcpy_chk, etc. will have an added argument,  __builtin_object_size,  which will have 
the size of destination buffer and is needed to do the checking.

- Fariborz