[PATCH] D141338: [-Wunsafe-buffer-usage] Filter out conflicting fix-its

[Ziqing Luo via Phabricator via cfe-commits]

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Two fix-its conflict if they have overlapping source ranges.  We shall not emit conflicting fix-its.
This patch adds a class to find all conflicting fix-its (as well as their associated gadgets or declarations).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141338

Files:
  clang/lib/Analysis/UnsafeBufferUsage.cpp
  clang/test/SemaCXX/warn-unsafe-buffer-usage-fixits.cpp

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