gecko-dev/tools/leaky/TestPreload.cpp

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#include "TestPreload.h"
#include <malloc.h>
#include <stdio.h>

// This is a simple test program that verifies that you can use
// LD_PRELOAD to override the implementation of malloc for your
// system. It depends on PreloadLib.cpp providing an alternate
// implementation of malloc that has a special hack to return a
// constant address given a particular size request.

int main(int argc, char** argv)
{
  char* p = (char*) malloc(LD_PRELOAD_TEST_MALLOC_SIZE);
  if (p == (char*)LD_PRELOAD_TEST_VALUE) {
    printf("LD_PRELOAD worked - we are using our malloc\n");
  }
  else {
    printf("LD_PRELOAD failed\n");
  }
  return 0;
}