Re: [boost] [new Warnings policy] MS C4180 on the MaintenanceGuidelines

Subject: Re: [boost] [new Warnings policy] MS C4180 on the MaintenanceGuidelines
From: Gottlob Frege (gottlobfrege_at_[hidden])
Date: 2009-11-18 01:57:45

On Tue, Nov 17, 2009 at 7:35 PM, Mateusz Loskot <mateusz_at_[hidden]> wrote:
> Emil Dotchevski wrote:
>> On Tue, Nov 17, 2009 at 2:57 PM, Mateusz Loskot <mateusz_at_[hidden]> wrote:
>>> Nothing wrong for me personally, but I've heard some say it's too long
>>> and unnecessary as in assert(0 != ptr) all 5 characters can
>>> be replaced with just one !
>>
>> Assuming ptr is a pointer, AFAIK assert(ptr) is illegal, though
>> assert(ptr!=0) and assert(!ptr) are OK.
>
> Yes, that's right. In this case some suggest to use
> assert(!!ptr) what I do not really consider personally
> as readable, prefering assert(0 != ptr);
>

Can someone explain how assert(ptr) is illegal?  I haven't heard that before.
Is if (ptr) illegal now too?

Tony