The following ill-formed code is accepted:
typedef struct
{
int &r;
} S;
S
f ()
{
return S ();
}
12.1 ; 5 states that if there is no user-declared constructor for a class, a
default constructor is implicitly declared. 12.1 ; 7 states that such a
constructor is implicitly defined when it is used to create an object of its
class type, and that it performs the same set of initializations that would be
performed by a user-written default constructor with an empty
mem-initializer-list. 12.6.2 ; 4 says that if an entity not named in a
mem-initializer-id is of reference type, the program is ill-formed.
--
Summary: implicitly defined constructor for class with reference
member
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: amylaar at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29039
