[all-commits] [llvm/llvm-project] 4b074b: [lldb] Fix UB in half2float and add some more tests.

[Raphael Isemann via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4b074b49be206306330076b9fa40632ef1960823
      https://github.com/llvm/llvm-project/commit/4b074b49be206306330076b9fa40632ef1960823
  Author: Raphael Isemann <teemperor at gmail.com>
  Date:   2021-05-19 (Wed, 19 May 2021)

  Changed paths:
    M lldb/source/Core/DumpDataExtractor.cpp
    M lldb/unittests/Core/DumpDataExtractorTest.cpp

  Log Message:
  -----------
  [lldb] Fix UB in half2float and add some more tests.

The added DumpDataExtractorTest uncovered that this is lshifting a negative
integer which upsets ubsan and breaks the sanitizer bot. This patch just
changes the variable we shift to be unsigned and adds a bunch of tests to make
sure this function does what it promises.