Question about whether a code fragment is expected to parse.

[Iain Sandoe via Gcc]

Hi

Given that GNU attributes are not part of the standard..

I wonder if the following is expected to work?

__attribute__((__deprecated__))
extern "C" __attribute__((__visibility__("default")))
void foo ()
{

}

t.C:3:8: error: expected unqualified-id before string constant
    3 | extern "C" __attribute__((__visibility__("default")))

===

Note that the C (and C++) front ends are happy to accept:

__attribute__((__deprecated__))
extern __attribute__((__visibility__("default")))
void foo ()
{

}

happy to file a PR/attempt a fix if we expect this to work
(clang accepts it, FWIW)

thanks
Iain