[all-commits] [llvm/llvm-project] b7d557: [clang-tidy][#51939] Exempt placement-new expressi...

[zero9178 via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b7d55771ce3ecc5c1768bd5877dbdd312f9ab0d7
      https://github.com/llvm/llvm-project/commit/b7d55771ce3ecc5c1768bd5877dbdd312f9ab0d7
  Author: Markus Böck <markus.boeck02 at gmail.com>
  Date:   2021-12-15 (Wed, 15 Dec 2021)

  Changed paths:
    M clang-tools-extra/clang-tidy/bugprone/ThrowKeywordMissingCheck.cpp
    M clang-tools-extra/docs/ReleaseNotes.rst
    M clang-tools-extra/test/clang-tidy/checkers/bugprone-throw-keyword-missing.cpp

  Log Message:
  -----------
  [clang-tidy][#51939] Exempt placement-new expressions from 'bugprone-throw-keyword-missing'

The purpose of this checker is to flag a missing throw keyword, and does so by checking for the construction of an exception class that is then unused.
This works great except that placement new expressions are also flagged as those lead to the construction of an object as well, even though they are not temporary (as that is dependent on the storage).
This patch fixes the issue by exempting the match if it is within a placement-new.

Fixes https://github.com/llvm/llvm-project/issues/51939

Differential Revision: https://reviews.llvm.org/D115576