https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82308
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I get with GCC 7.2
> /space/rguenther/install/gcc-7.2/bin/g++ -S t.C
t.C: In function ‘int main()’:
t.C:18:16: error: missing template arguments before ‘d’
X d{a}; //cannot be deduced
^
and clang complains:
> clang++ -S t.C -std=c++14
t.C:18:11: error: use of class template 'X' requires template arguments
X d{a}; //cannot be deduced
^
t.C:4:7: note: template is declared here
class X {
^
1 error generated.
