c++/9112: [gcc-3.4] new C++ parser rejects code older parsers accepted

c++/9112: [gcc-3.4] new C++ parser rejects code older parsers accepted

[andrew]

>Number:         9112
>Category:       c++
>Synopsis:       [gcc-3.4] new C++ parser rejects code older parsers accepted
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 31 04:16:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Andrew Pollard
>Release:        gcc-3.4-20021230 (experimental)
>Organization:
>Environment:
gcc-3.4-20021230 (experimental)
>Description:
As confirmed on the gcc mailing list, the following code should compile

[ http://gcc.gnu.org/ml/gcc/2002-12/msg01615.html ]

a.cxx:
-------------------------
struct A {
       int a, b;
       A(int i, int j) : a(i), b(j) {}
       void foo() {};
};

int
main()
{
	int a = 2;
	A(a, a).foo();

	return (0);
}
--------------------------

% g++34 a.cxx
a.cxx: In function `int main()':
a.cxx:11: error: conflicting types for `A a'
a.cxx:10: error: previous declaration as `int a'
a.cxx:11: error: expected init-declarator
a.cxx:11: error: expected `,' or `;'

It appears to think that I want to declare a new variable 'a' with type 'A', whereas I want to construct a temporary A(2,2) and invoke foo() on it.

Previous versions of g++ work (3.0-cvs, 3.2-cvs, 3.3-cvs) and so do icc-70 and VC++6.0
>How-To-Repeat:

>Fix:

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