https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57728
Jens Maurer <jens.maurer at gmx dot net> changed:
What |Removed |Added
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CC| |jens.maurer at gmx dot net
--- Comment #13 from Jens Maurer <jens.maurer at gmx dot net> ---
This bug saw its last activity nearly a year ago, with patches from Jason
applied, but the issue does not seem to be fixed in its entirety (using gcc
7.2).
Specifically, this translation unit:
template<class T>
struct C {
C() = default;
void f() { }
int i = 5;
};
template class C<int>;
causes C<int>::f() to be defined, but the defaulted constructor of C<int> is
not defined. (Replacing "= default" with "{}" causes definition of the C<int>
constructor.)
$ nm -C x.o
0000000000000000 W C<int>::f()
The current behavior is obviously not what we want if we choose to use explicit
instantiations.
