I propose to pass -fno-delete-null-pointer-checks to Clang under MKSANITIZER/MKLIBCSANITIZER. http://netbsd.org/~kamil/patch-00251-rump-fno-delete-null-pointer-checks.txt This disabled alerts from Clang and permits to run sanitized rump. Meanwhile as far as I am aware, the C committee was prompted to discuss NULL+0 operations. In future we can either adapt the code to the decisions taken in the toolchains. We intend to fuzz sanitized rump during the upcoming GSoC period.
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