https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98862
--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #1) > libstdc++-v3 isn't supported ATM on either nvptx* or amdgcn* offloading, so > if one needs anything from libstdc++, it will not work. I can confirm that it does not work with '-O0', showing that the symbol _ZNSt7complexIfEC1Eff alias std::complex<float>::complex(float, float) is missing. But: > As for the 16 byte atomics, I thought this was meant to be solved through > -latomic, but I might misremember. Yes, $ g++ -fopenmp -O2 complex_reduction.cpp -foffload=-latomic works – both compiling and running (on nvptx). Note the added '-foffload=-latomic' (and -O2). See also: https://gcc.gnu.org/wiki/Offloading#Compilation_options
