https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98233
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I don't think this is a bug.
The assignment of A does a memberwise copy, which means first it assigns the
A::a member, then it assigns the A::m member. That means x.m[0] = x is
equivalent to:
x.m[0].a = x.a;
x.m[0].m = x.m;
Initially x.m[0] is {9,{}}.
After the first member gets assigned it is {13,{}}.
After the second member gets assigned it is {13,{13,{}}}.