[Bug c++/119687] ICE when building kwin-6.3.4 against qt-6.9 (in operator*, at cp/cp-tree.h:876) (deduction guides related)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119687

--- Comment #3 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Sam James from comment #2)
> Invalid reduction:

On that, it's a 14/15 regression, but let's see what it is like on something
valid.