[Bug c++/121801] mangling of _Float16 values in template-args is empty

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121801

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-15 branch has been updated by Matthias Kretz
<mkr...@gcc.gnu.org>:

https://gcc.gnu.org/g:16493194f21210480bd39c43f17b4e98417052c1

commit r15-10324-g16493194f21210480bd39c43f17b4e98417052c1
Author: Matthias Kretz <m.kr...@gsi.de>
Date:   Fri Sep 5 12:16:34 2025 +0200

    c++: Fix mangling of _Float16 template args [PR121801]

    Signed-off-by: Matthias Kretz <m.kr...@gsi.de>

    gcc/testsuite/ChangeLog:

            PR c++/121801
            * g++.dg/abi/pr121801.C: New test.

    gcc/cp/ChangeLog:

            PR c++/121801
            * mangle.cc (write_real_cst): Handle 16-bit real and assert
            that reals have 16 bits or a multiple of 32 bits.

    (cherry picked from commit 19d1c7c28f4fd0557dd868a7a4041b00ceada890)