lib/Sema/SemaDecl.cpp

1952     auto ShadowI = ShadowingDecls.find(D);
1953     if (ShadowI != ShadowingDecls.end()) {
1959       ShadowingDecls.erase(ShadowI);
7631         ShadowingDecls.insert({PVD->getCanonicalDecl(), FD});
7666               ->ShadowingDecls.push_back(
7720   for (const auto &Shadow : LSI->ShadowingDecls) {
7753   if (!getLangOpts().CPlusPlus || ShadowingDecls.empty())
7760   auto I = ShadowingDecls.find(D);
7761   if (I == ShadowingDecls.end())
7770   ShadowingDecls.erase(I);