Ensure we have a guaranteed path to free and destroy about cake

[thradams]

This may be a problem

typedef int *FILE;
[[free]] FILE* fopen(const char* name, const char* args);
void fclose([[free]]FILE* f);


int main()
{
   FILE* f = fopen("file.txt", "r");   
   if (f){     
     fclose(f);
   } 
}

Alternative

typedef int *FILE;
[[free]] FILE* fopen(const char* name, const char* args);
void fcloseex([[free]]FILE* f) ( if (f) fclose(f); }

int main()
{
   FILE* f = fopen("file.txt", "r");   
   if (f){     
   }
   fcloseex(f);    
}