Can we change the value of an object defined with const through pointers?

Question

#include 
int main()
{
    const int a = 12;
    int *p;
    p = &a;
    *p = 70;
}

Will it work?

Answer 1

It does indeed work with gcc. It didn't like it though:

test.c:6: warning: assignment discards qualifiers from pointer target type

But the value did change when executed. I won't point out the obvious no-no...