c++/2843: parser doesn't accept __attribute__ ((__unused__)) extension

[dave.anglin@nrc.ca]

>Number:         2843
>Category:       c++
>Synopsis:       parser doesn't accept __attribute__ ((__unused__)) extension
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed May 16 08:56:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Dave Anglin
>Release:        gcc-3.0 prerelease
>Organization:
>Environment:
hppa1.1-hp-hpux10.20
>Description:
519 (hiauly1)dave> cat unused.cc
#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
int
main (int argc ATTRIBUTE_UNUSED, char ** argv ATTRIBUTE_UNUSED)
{
  return 0;
}
520 (hiauly1)dave> g++ -W -Wall -c unused.cc

unused.cc:3: parse error before `__attribute__'

The program compiles with no warnings as C code.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: