[all-commits] [llvm/llvm-project] 3fb0de: [Darwin] Fix OS version checks inside simulators

[Julian Lettner via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3fb0de820796cc6e322c8378713d375d9870a353
      https://github.com/llvm/llvm-project/commit/3fb0de820796cc6e322c8378713d375d9870a353
  Author: Julian Lettner <julian.lettner at apple.com>
  Date:   2020-07-28 (Tue, 28 Jul 2020)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
    M compiler-rt/lib/sanitizer_common/tests/sanitizer_mac_test.cpp

  Log Message:
  -----------
  [Darwin] Fix OS version checks inside simulators

compiler-rt checks OS versions by querying the Darwin kernel version.
This is not necessarily correct inside the simulators if the simulator
runtime is not aligned with the host macOS.  Let's instead check the
`SIMULATOR_RUNTIME_VERSION` env var.

rdar://63031937

Reviewed By: delcypher

Differential Revision: https://reviews.llvm.org/D83977