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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/101544] [OpenMP][AMDGCN][nvptx] C++ offloading:
 unresolved _Znwm = "operator new(unsigned long)"
Date: Wed, 21 Jul 2021 07:58:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101544

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |target
            Summary|[OpenMP] 'declare target'   |[OpenMP][AMDGCN][nvptx] C++
                   |block around class =E2=80=93        |offloading: unreso=
lved
                   |unresolved _Znwm =3D          |_Znwm =3D "operator
                   |"operator new(unsigned      |new(unsigned long)"
                   |long)"                      |
             Target|                            |nvptx-none,amdgcn-amdhsa
                 CC|cltang at gcc dot gnu.org          |ams at gcc dot gnu.=
org,
                   |                            |vries at gcc dot gnu.org

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Looking at it more closely, the problem seems to be that
  libstdc++{.so,.a}
does not exist for neither nvptx nor amdgcn =E2=80=93 and the ME handles th=
is
correctly.

The question is what's needed to get better libstdc++ support =E2=80=93 eit=
her full
support or like with libgfortran for nvptx stripped-down minimal version.=