Re: Compiler Generated Default Functions

From:
"kanze" <kanze@gabi-soft.fr>
Newsgroups:
comp.lang.c++.moderated
Date:
28 Jul 2006 07:57:37 -0400
Message-ID:
<1154077892.011454.273840@b28g2000cwb.googlegroups.com>
Matthias Hofmann wrote:

"kanze" <kanze@gabi-soft.fr> schrieb im Newsbeitrag
news:1153919089.902645.33960@i42g2000cwa.googlegroups.com...

    extern void* operator new( size_t, int ) ;

    struct A {} ;

    A* p = new A ; // Not an error, although a compiler
                        // generated default would hide the
                        // global operator.


If I understand this correctly, the allocation of a new A
should invoke the above declared placement version of operator
new(), shouldn't it? But doesn't this require the following?

// Pass 42 as the second
// argument of operator new().
A* p = new( 42 ) A;

Otherwise, I do not understand why the example you provided
should not be an error.


My mistake. You're right, my example should have used the
placement new syntax.

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