* Sparse parsing question: symbols in parse tree
@ 2017-08-20 21:51 Dibyendu Majumdar
2017-08-20 22:09 ` Linus Torvalds
0 siblings, 1 reply; 3+ messages in thread
From: Dibyendu Majumdar @ 2017-08-20 21:51 UTC (permalink / raw)
To: Linux-Sparse
Hi,
Whenever an EXPR_SYMBOL is encountered does this actually equate to
the address of the symbol?
Regards
Dibyendu
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Sparse parsing question: symbols in parse tree
2017-08-20 21:51 Sparse parsing question: symbols in parse tree Dibyendu Majumdar
@ 2017-08-20 22:09 ` Linus Torvalds
2017-08-20 22:15 ` Dibyendu Majumdar
0 siblings, 1 reply; 3+ messages in thread
From: Linus Torvalds @ 2017-08-20 22:09 UTC (permalink / raw)
To: Dibyendu Majumdar; +Cc: Linux-Sparse
On Sun, Aug 20, 2017 at 2:51 PM, Dibyendu Majumdar
<mobile@majumdar.org.uk> wrote:
>
> Whenever an EXPR_SYMBOL is encountered does this actually equate to
> the address of the symbol?
Yes, it should.
Note that not all EXPR_SYMBOL are really symbols in the C sense. As
mentioned in another thread, you can also have anonymous symbols -
they act kind of like a named variable, just without the name.
The most common case of an anonymous symbol is a constant string, but
we do the general case of "cast followed by an initializer" as an
anonymous symbol of any type.
Linus
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Sparse parsing question: symbols in parse tree
2017-08-20 22:09 ` Linus Torvalds
@ 2017-08-20 22:15 ` Dibyendu Majumdar
0 siblings, 0 replies; 3+ messages in thread
From: Dibyendu Majumdar @ 2017-08-20 22:15 UTC (permalink / raw)
To: Linus Torvalds; +Cc: Linux-Sparse
Hi Linus,
On 20 August 2017 at 23:09, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Sun, Aug 20, 2017 at 2:51 PM, Dibyendu Majumdar
> <mobile@majumdar.org.uk> wrote:
>>
>> Whenever an EXPR_SYMBOL is encountered does this actually equate to
>> the address of the symbol?
>
> Yes, it should.
>
> Note that not all EXPR_SYMBOL are really symbols in the C sense. As
> mentioned in another thread, you can also have anonymous symbols -
> they act kind of like a named variable, just without the name.
>
> The most common case of an anonymous symbol is a constant string, but
> we do the general case of "cast followed by an initializer" as an
> anonymous symbol of any type.
>
That's interesting - thanks!
Regards
Dibyendu
^ permalink raw reply [flat|nested] 3+ messages in thread
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2017-08-20 21:51 Sparse parsing question: symbols in parse tree Dibyendu Majumdar
2017-08-20 22:09 ` Linus Torvalds
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