diff options
| -rw-r--r-- | debuggerd/crasher.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/debuggerd/crasher.c b/debuggerd/crasher.c index 8c225cb..5ecb1a5 100644 --- a/debuggerd/crasher.c +++ b/debuggerd/crasher.c @@ -47,17 +47,19 @@ static int smash_stack(int i) { // Unless there's a "big enough" buffer on the stack, gcc // doesn't bother inserting checks. char buf[8]; - // If we don't write something relatively unpredicatable + // If we don't write something relatively unpredictable // into the buffer and then do something with it, gcc // optimizes everything away and just returns a constant. *(int*)(&buf[7]) = (uintptr_t) &buf[0]; return *(int*)(&buf[0]); } +static void* global = 0; // So GCC doesn't optimize the tail recursion out of overflow_stack. + __attribute__((noinline)) static void overflow_stack(void* p) { - fprintf(stderr, "p = %p\n", p); void* buf[1]; buf[0] = p; + global = buf; overflow_stack(&buf); } |