https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63374
Eric Gallager <egallager at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-08-21 CC| |egallager at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> --- Confirmed, the output I get is: $ /usr/local/bin/g++ -c -Wall -Wextra -pedantic -Wmissing-field-initializers -Weffc++ 63374.cc 63374.cc: In constructor ‘A::A(int)’: 63374.cc:16:2: warning: ‘A::a1’ should be initialized in the member initialization list [-Weffc++] A(int x) : b1(x), b2(x), b3(x), b4(x) {} ^ 63374.cc:16:2: warning: ‘A::a2’ should be initialized in the member initialization list [-Weffc++] 63374.cc:16:2: warning: ‘A::a4’ should be initialized in the member initialization list [-Weffc++] 63374.cc:16:38: error: no matching function for call to ‘B::B()’ A(int x) : b1(x), b2(x), b3(x), b4(x) {} ^ 63374.cc:3:2: note: candidate: ‘B::B(int)’ B(int x) : z(x) {} ^ 63374.cc:3:2: note: candidate expects 1 argument, 0 provided 63374.cc:1:7: note: candidate: ‘constexpr B::B(const B&)’ class B { ^ 63374.cc:1:7: note: candidate expects 1 argument, 0 provided 63374.cc:1:7: note: candidate: ‘constexpr B::B(B&&)’ 63374.cc:1:7: note: candidate expects 1 argument, 0 provided $