https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109663
Bug ID: 109663
Summary: False positive? Converting from initializer list would
use explicit constructor
Product: gcc
Version: 13.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: carlosgalvezp at gmail dot com
Target Milestone: ---
Created attachment 54950
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54950&action=edit
Preprocessed source
Hi!
We are bumping our GCC installation from
6910cad55ffc330dc9767d2c8e0b66ccfa4134af to
cc035c5d8672f87dc8c2756d9f8367903aa72d93 (GCC 13.1 release), and are now
getting a handful of errors in this type of code compiling in C++14 mode:
#include <Eigen/Dense>
int main()
{
constexpr std::size_t kColumns{4};
constexpr std::size_t kRows{4};
using MyVector = Eigen::Matrix<float, kColumns, 1>;
using MyMatrix = Eigen::Matrix<float, kColumns, kRows>;
MyMatrix matrix{MyMatrix::Zero()};
MyVector const& my_col{matrix.col(0)};
}
Godbolt: https://godbolt.org/z/rx6EY4qbY
Preprocessed source attached.
I am wondering if this is a False Positive or a real error that should be
fixed?
