musl - Re: [PATCH] Define NULL as __null in C++ mode when using GCC or Clang.

Date: Wed, 10 Jul 2019 08:34:12 +0200
From: Florian Weimer <fweimer@...hat.com>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] Define NULL as __null in C++ mode when using GCC or Clang.

* Szabolcs Nagy:

> it is clear that 0L is a conforming definition for all
> conforming c++ compilers.
>
> it is less clear if __null is so in all compilers that
> define __GNUC__.

Why wouldn't something like this be valid for current C++ versions?

static inline constexpr decltype(nullptr) __null{};
#define NULL __null

I don't see a requirement that NULL must be an expression that can be
evaluated by the preprocessor.

Thanks,
Florian

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.