[all-commits] [llvm/llvm-project] e09772: [clang-tidy] Fix crash on "reference-to-array" par...

[Whisperity via All-commits]

  Branch: refs/heads/release/13.x
  Home:   https://github.com/llvm/llvm-project
  Commit: e097724cb9efbc3a068767ecf264897e97b2e109
      https://github.com/llvm/llvm-project/commit/e097724cb9efbc3a068767ecf264897e97b2e109
  Author: Whisperity <whisperity at gmail.com>
  Date:   2021-08-05 (Thu, 05 Aug 2021)

  Changed paths:
    M clang-tools-extra/clang-tidy/bugprone/EasilySwappableParametersCheck.cpp
    M clang-tools-extra/test/clang-tidy/checkers/bugprone-easily-swappable-parameters-implicits.cpp
    M clang-tools-extra/test/clang-tidy/checkers/bugprone-easily-swappable-parameters-len2.cpp

  Log Message:
  -----------
  [clang-tidy] Fix crash on "reference-to-array" parameters in 'bugprone-easily-swappable-parameters'

An otherwise unexercised code path related to trying to model
"array-to-pointer decay" resulted in a null pointer dereference crash
when parameters of type "reference to array" were encountered.

Fixes crash report http://bugs.llvm.org/show_bug.cgi?id=50995.

Reviewed By: aaron.ballman

Differential Revision: http://reviews.llvm.org/D106946

(cherry picked from commit 21832121e112d97f1e197b35959867f3a99226ee)