[Bug] Attributes cannot be applied to asm statements

[Bug] Attributes cannot be applied to asm statements

[Julian Waters]

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Sorry for posting this here, I am unable to create an issue in the gcc
tracker

Consider the following:

[[gnu::no_reorder]]
asm ("nop");

The correct gcc warning should be that "attributes in front of statements
are ignored", signifying that the asm was correctly processed as a
statement, and the attribute dropped during that processing, but instead:

error.cpp:51:5: error: expected primary-expression before 'asm'
   51 |     asm ("nop" "\n\t"
      |     ^~~
error.cpp:50:5: warning: attributes at the beginning of statement are
ignored [-Wattributes]
   50 |     [[gnu::no_reorder]]
      |     ^~~~~~~~~~~~~~~~~~~

The compiler errors out, with the parser strangely having expected an
expression after the attribute. Afterwards, it then confusingly parses the
asm statement and discards the attribute correctly, so I am fairly certain
this is a bug. The attribute above may not be a very good example, but
there are attributes like gnu::hot and gnu::cold which are supposed to work
with asm statements. Could someone help me post this to the bug tracker?
Thanks in advance

best regards,
Julian

Re: [Bug] Attributes cannot be applied to asm statements

[Jonathan Wakely]

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On Wed, 19 Jul 2023, 08:15 Julian Waters via Gcc-help, <gcc-help@gcc.gnu.org>
wrote:

> Sorry for posting this here, I am unable to create an issue in the gcc
> tracker
>

Your account has been created now, please post the bug in the right place.

It sometimes takes more than 12 minutes for somebody to respond to the
account requests :-)

Re: [Bug] Attributes cannot be applied to asm statements

[Julian Waters]

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Yep, thought it was going to take much longer than that honestly. Oops...

On Wed, Jul 19, 2023 at 3:41 PM Jonathan Wakely <jwakely.gcc@gmail.com>
wrote:

>
>
> On Wed, 19 Jul 2023, 08:15 Julian Waters via Gcc-help, <
> gcc-help@gcc.gnu.org> wrote:
>
>> Sorry for posting this here, I am unable to create an issue in the gcc
>> tracker
>>
>
> Your account has been created now, please post the bug in the right place.
>
> It sometimes takes more than 12 minutes for somebody to respond to the
> account requests :-)
>

Re: [Bug] Attributes cannot be applied to asm statements

[Jonathan Wakely]

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On Wed, 19 Jul 2023, 08:45 Julian Waters, <tanksherman27@gmail.com> wrote:

> Yep, thought it was going to take much longer than that honestly. Oops...
>

It sometimes does take longer. There are only three volunteers who deal
with the requests, so it depends how busy we are and when we happen to
check the emails.




> On Wed, Jul 19, 2023 at 3:41 PM Jonathan Wakely <jwakely.gcc@gmail.com>
> wrote:
>
>>
>>
>> On Wed, 19 Jul 2023, 08:15 Julian Waters via Gcc-help, <
>> gcc-help@gcc.gnu.org> wrote:
>>
>>> Sorry for posting this here, I am unable to create an issue in the gcc
>>> tracker
>>>
>>
>> Your account has been created now, please post the bug in the right place.
>>
>> It sometimes takes more than 12 minutes for somebody to respond to the
>> account requests :-)
>>
>