From: "H.Yamamoto" <ocean@...2.ccsnet.ne.jp>
Date: 2004-09-14T01:21:07+09:00
Subject: Re: [PATCH] dir.c --- Dir.chdir error handling

nobu.nokada@softhome.net wrote:
(2004/09/14 01:07)

>Hi,
>
>At Mon, 13 Sep 2004 16:54:06 +0900,
>H.Yamamoto wrote in [ruby-core:03384]:
>> Probably former because there is difference in type of arguments
>> between prototype and implementation.
>> (Maybe this is allowed in C, but I could not find document to confirm.
>>  At least C++ fails.)
>
>The latter.  VALUEs are not pointers, so difference in
>qualifiers is OK, even in C++.  Actually, it is disallowed only
>when the dereferenced qualifiers conflict.

Umm, my bcc32 may be broken.

// f.cpp

extern int foo(int);

int main()
{
    return foo(32);
}

// g.cpp

int foo(volatile int x)
{
    x;
    return x;
}

// result

R:\>g++ f.cpp g.cpp -o f.exe

R:\>bcc32 f.cpp g.cpp
Borland C++ 5.5.1 for Win32 Copyright (c) 1993, 2000 Borland
f.cpp:
g.cpp:
Turbo Incremental Link 5.00 Copyright (c) 1997, 2000 Borland
Error: 外部シンボル 'foo(int)' が未解決（R:\F.OBJ が参照）