[Bug c++/110734] New: Attributes cannot be applied to asm statements

["tanksherman27 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110734

            Bug ID: 110734
           Summary: Attributes cannot be applied to asm statements
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tanksherman27 at gmail dot com
  Target Milestone: ---

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.