Global Definition Vs Global Declaration

[zahed khurasani]

Thanks Ian.
Yes this is C and no am not using the -fno-common option. However,
DECL_COMMON is returning non-zero for both cases. Its zero only for a
declaration that includes 'static'.

Zahed

On Wed, Apr 4, 2012 at 2:39 PM, Ian Lance Taylor <iant@google.com> wrote:
> zahed khurasani <sdzahed@gmail.com> writes:
>
>> How can I distinguish between the following two declarations (both
>> appear outside any function at file scope)?
>>
>> extern int i;
>> int i;
>>
>> Both show up as VAR_DECL nodes in the BLOCK_VARS of the
>> TRANSLATION_UNIT_DECL. Moreover, both return true for DECL_EXTERNAL. I
>> need a way to say which is which in my plugin code.
>
> I assume this is C, not C++, and that you are not using the -fno-common
> option.  The "int i;" will be DECL_COMMON.
>
> Ian