[PATCH] D143128: [-Wunsafe-buffer-usage][WIP] Fix-Its transforming `&DRE[any]` to `(DRE.data() + any)`

[Ziqing Luo via Phabricator via cfe-commits]

ziqingluo-90 updated this revision to Diff 495325.
ziqingluo-90 retitled this revision from "[-Wunsafe-buffer-usage][WIP] Fix-Its transforming `&DRE[any]` to `DRE.data() + any`" to "[-Wunsafe-buffer-usage][WIP] Fix-Its transforming `&DRE[any]` to `(DRE.data() + any)`".
ziqingluo-90 added a comment.

Let `fixUPCAddressofArraySubscriptWithSpan` return `std::nullopt` instead of an empty list when we should give up on the fix-it.

Add a few test cases for some corner cases.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D143128/new/

https://reviews.llvm.org/D143128

Files:
  clang/include/clang/Analysis/Analyses/UnsafeBufferUsage.h
  clang/include/clang/Analysis/Analyses/UnsafeBufferUsageGadgets.def
  clang/lib/Analysis/UnsafeBufferUsage.cpp
  clang/test/SemaCXX/warn-unsafe-buffer-usage-fixits-addressof-arraysubscript.cpp

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