[Bug c++/91979] Incorrect mangling for non-template-argument nullptr expression

[kamleshbhalui at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91979

--- Comment #4 from Kamlesh Kumar <kamleshbhalui at gmail dot com> ---
patch posted at https://gcc.gnu.org/ml/gcc-patches/2019-10/msg01585.html