wasmer/lib/emscripten/emtests/stack_overflow.cpp

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2018-12-27 07:46:41 +00:00
// Copyright 2014 The Emscripten Authors. All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License. Both these licenses can be
// found in the LICENSE file.
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <emscripten.h>
void recurse(unsigned int x);
void act(volatile unsigned int *a) {
printf("act %d\n", *a);
unsigned int b = (int)(intptr_t)(alloca(*a));
if (b < *a) *a--;
recurse(*a);
}
void recurse(volatile unsigned int x) {
printf("recurse %d\n", x);
volatile unsigned int a = x;
volatile char buffer[1000*1000];
buffer[x/2] = 0;
buffer[(x-1)/2] = 0;
EM_ASM({});
if (x*x < x) {
act(&a);
if (a < x) x = a;
x--;
}
x += buffer[x/2];
if (x > 0) recurse(x-1);
}
int main() {
recurse(1000*1000);
}