Re: Q: is A a = 100; equivalent to A a (100); ?

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Article #2209

#2209

From: Damian Conway
Date: Mon, 16 Oct 1995 03:43

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jason@cygnus.com (Jason Merrill) and other cogniscenti write:

>> | According to the standard, are the two lines of the main
>> | equivalent ? My Opinion is yes

>No.

Then is it possible to set up a class X wherein:

	X x(1);
and
	X x = 1;

behave differently?

Or is the compiler always allowed to optimize away the temporary and copy 
constructor, even if that changes the semantics of the program?

damian
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  who: Damian Conway                 email: damian@bruce.cs.monash.edu.au
where: Dept. Computer Science        phone: +61-3-565-5184
       Monash University               fax: +61-3-565-5146
       Clayton 3168                  quote: "A pessimist is never disappointed."
       AUSTRALIA

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From: damian@molly.cs.monash.edu.au (Damian Conway)
Newsgroups: comp.std.c++
Subject: Re: Q: is A a = 100; equivalent to A a (100); ?
Date: 16 Oct 1995 03:43:52 GMT
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