[all-commits] [llvm/llvm-project] 981686: [-Wunsafe-buffer-usage] Add a new warning for uses...

[Ziqing Luo via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9816863dd439cd60c96d5764c4c21ca1a7f3d8da
      https://github.com/llvm/llvm-project/commit/9816863dd439cd60c96d5764c4c21ca1a7f3d8da
  Author: Ziqing Luo <ziqing at udel.edu>
  Date:   2024-01-26 (Fri, 26 Jan 2024)

  Changed paths:
    M clang/include/clang/Analysis/Analyses/UnsafeBufferUsage.h
    M clang/include/clang/Analysis/Analyses/UnsafeBufferUsageGadgets.def
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/lib/Analysis/UnsafeBufferUsage.cpp
    M clang/lib/Sema/AnalysisBasedWarnings.cpp
    A clang/test/SemaCXX/warn-unsafe-buffer-usage-in-container-span-construct.cpp
    M clang/test/SemaCXX/warn-unsafe-buffer-usage-warning-data-invocation.cpp

  Log Message:
  -----------
  [-Wunsafe-buffer-usage] Add a new warning for uses of std::span two-parameter constructors (#77148)

Constructing `std::span` objects with the two parameter constructors
could introduce mismatched bounds information, which defeats the
purpose of using `std::span`.  Therefore, we warn every use of such
constructors.

rdar://115817781