https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87665
--- Comment #3 from Jan Christoph Uhde ---
» g++-head -v
Using built-in specs.
COLLECT_GCC=g++-head
COLLECT_LTO_WRAPPER=/bal/gcc_trunk_install/bin/../libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: .
++
Assignee: unassigned at gcc dot gnu.org
Reporter: linux at obiwahn dot org
Target Milestone: ---
» cat test.cpp
#include
#include
#include
#include
#include
int main()
{
using my_pair = std::pair, double*>;
std::vector vec;
for (int i = 0; i < 1
