[llvm] [llvm-objcopy] Remove references for empty section groups (PR #98106)

[Fangrui Song via llvm-commits]

MaskRay wrote:

> Sorry for this, i haven't tested my changes with asan

No worries. This case was difficult to analyze and we don't have asan premerge bots (the existing bots are underwhelmed even without asan).

You can test asan with `-DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_USE_SANITIZER=Address`. Since it is slow, perhaps test it with targeted testing `check-llvm-tools-llvm-objcopy`.

https://github.com/llvm/llvm-project/pull/98106