Re: string class problem

From:
 James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Fri, 29 Jun 2007 11:18:07 -0000
Message-ID:
<1183115887.165703.190400@o61g2000hsh.googlegroups.com>
On Jun 28, 7:44 pm, "BobR" <removeBadB...@worldnet.att.net> wrote:

James Kanze wrote in message...

/* """
  (<cstdlib> is another story; none of the
compilers I have access to include the required overloads of
atexit, for example.)
""" */

I'm a little in-the-fog here [1].
// -------
In <cstdlib> (GCC(MinGW)3.3.1), after the #undefs:

namespace std {
  // .....
  using ::atexit;
  // ..... }


Which, of course, isn't a legal implementation according to the
current standard (although the next release will make it one).

In <stdlib.h>:
/* Note: This is in startup code, not imported directly from dll */
int __cdecl atexit (void (*)(void));
// -------

What 'required overloads' are you refering to?


    extern "C" int atexit(void (*f )(void))
    extern "C++" int atexit(void (*f )(void))

Note that the standard requires this for every function in the C
library which takes a callback.

And of course, the real problem here is that the compiler isn't
conform; a header which did the above with g++ probably wouldn't
compile. (But then, g++ is just behaving like most other
implementors in this respect: implement whatever you feel like,
rather than what the standard requires.)

--
James Kanze (GABI Software) email:james.kanze@gmail.com
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