[PATCH] D124524: [demangler] Avoid nullptr UB

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added subscribers: rjmccall, xbolva00.
xbolva00 added a comment.

Can you show some C++ rule why you think that

memcpy(nullptr, nullptr, 0) is UB?

cc @rjmccall

Some time ago I was told this usage is perfectly fine and LLVM cannot assume that dst and src are nonnull pointers.


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https://reviews.llvm.org/D124524