[Bug c++/92852] [8/9/10 Regression] location references block not in block tree

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92852

--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:90e1d25b60630d45fe1092abeb8f4d7b6c5e2da2

commit r8-10051-g90e1d25b60630d45fe1092abeb8f4d7b6c5e2da2
Author: Jason Merrill <ja...@redhat.com>
Date:   Mon Feb 24 11:21:47 2020 -0500

    c++: Preserve location in maybe_constant_value.

    If cxx_eval_outermost_constant_expr doesn't change the argument, we really
    shouldn't unshare it when we try to fold it again.

    gcc/cp/ChangeLog
    2020-02-24  Jason Merrill  <ja...@redhat.com>

        PR c++/92852
        * constexpr.c (maybe_constant_value): Don't unshare if the cached
        value is the same as the argument.