Re: [protobuf] usage of 'null' as a variable name in protobuf-2.5.0

[Feng Xiao]

On Thu, May 16, 2013 at 10:58 PM, <daniel...@gmail.com> wrote:

Version 2.5.0 has the following line in a couple of places in repeated_field.h:

MessageLite* null = NULL;


My gnu-based compiler doesn't like this as it thinks 'null' is a constant.

If I rename 'null' as 'narl' then it's OK.

Is 'null' a valid variable name?

I believe it is. You are probably using some library which defines null as a macro.

 

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[Henner Zeller]

On 20 May 2013 09:55, Feng Xiao <xiao...@google.com> wrote:

On Thu, May 16, 2013 at 10:58 PM, <daniel...@gmail.com> wrote:

Version 2.5.0 has the following line in a couple of places in repeated_field.h:

MessageLite* null = NULL;


My gnu-based compiler doesn't like this as it thinks 'null' is a constant.

If I rename 'null' as 'narl' then it's OK.

Is 'null' a valid variable name?

I believe it is. You are probably using some library which defines null as a macro.

Still, it might not be a good idea to use such a name. I could imagine translating this proto buffer into other languages might create trouble.

-h