1. Vulnerability Description

• If you assign a bool type variable value to a pointer variable, a crash may occur.

2. Vulnerability Countermeasure

• Do not assign a bool type variable value to a pointer variable

3. Sample Code

• Vulnerable Code

void f(void) {
  bool bTmp = false;
  char *ptr = (char*)bTmp;
  /* ... */
}

• Safe Code

#include <stdint.h>
  
void f(void) {
  char *ptr = NULL;
  /* ... */
  uintptr_t number = (uintptr_t)ptr; 
  /* ... */
}