Re: Compiling GCC with g++: a report

[Florian Weimer <fw at deneb dot enyo dot de>]

* Gabriel Dos Reis:

> The first resistance seems to come from the pervasive use of the implicit
> conversion void* -> T*, mostly with storage allocating functions.

This can be worked around on the C++ side, see the example code below.
It's a kludge, but it's not too bad IMHO.

class xmalloc_result;
xmalloc_result xmalloc (size_t);

class xmalloc_result
{
  friend xmalloc_result xmalloc (size_t);
  const size_t size_;

  xmalloc_result (size_t size)
    : size_ (size)
  {
  }

  xmalloc_result operator= (const xmalloc_result&);
  // not implemented

public:
  template <typename T> operator T* () const
  {
    return static_cast<T*> (malloc(size_));
  }
};

inline xmalloc_result
xmalloc (size_t size)
{
  return xmalloc_result (size);
}

char *
foo (void)
{
  return xmalloc (1);
}

void
bar (int **result)
{
  *result = xmalloc (sizeof (int));
}