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Hi, we plan to remove -fsanitize-address-zero-base-shadow command line flag from clang, and disable zero-base shadow support on all platforms where it is not the default behavior. - It is completely unused, as far as we know. And completely undocumented, too. - It is ABI-incompatible with non-zero-base shadow, which means all objects in a process must be built with the same setting. Failing to