[Bug debug/87462] [7/8 Regression] undefined reference error occurs when -g, -fdebug-types-section and -O2 are used at the same time

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87462

--- Comment #6 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Fixed on gcc-8, r266181.