#include <stdio.h>
#include <string.h>
#include <stdlib.h>
__attribute__((noinline))
char *pretend_to_do_something(char *x) {
__asm__ __volatile__("" : : "r" (x) : "memory");
return x;
}
__attribute__((noinline))
char *LeakStack() {
char x[1024];
memset(x, 0, sizeof(x));
return pretend_to_do_something(x);
}
template<size_t kFrameSize>
__attribute__((noinline))
void RecuriveFunctionWithStackFrame(int depth) {
if (depth <= 0) return;
char x[kFrameSize];
x[0] = depth;
pretend_to_do_something(x);
RecuriveFunctionWithStackFrame<kFrameSize>(depth - 1);
}
int main(int argc, char **argv) {
int n_iter = argc >= 2 ? atoi(argv[1]) : 1000;
int depth = argc >= 3 ? atoi(argv[2]) : 500;
for (int i = 0; i < n_iter; i++) {
RecuriveFunctionWithStackFrame<10>(depth);
RecuriveFunctionWithStackFrame<100>(depth);
RecuriveFunctionWithStackFrame<500>(depth);
RecuriveFunctionWithStackFrame<1024>(depth);
RecuriveFunctionWithStackFrame<2000>(depth);
RecuriveFunctionWithStackFrame<5000>(depth);
RecuriveFunctionWithStackFrame<10000>(depth);
}
char *stale_stack = LeakStack();
RecuriveFunctionWithStackFrame<1024>(10);
stale_stack[100]++;
return 0;
}