[all-commits] [llvm/llvm-project] 987f15: [msan] Fix sigaltstack false positive.

[Evgenii Stepanov via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 987f153929e813db1ea7e3354fd7a0b6b4adf4c0
      https://github.com/llvm/llvm-project/commit/987f153929e813db1ea7e3354fd7a0b6b4adf4c0
  Author: Evgenii Stepanov <eugenis at google.com>
  Date:   2020-03-23 (Mon, 23 Mar 2020)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
    M compiler-rt/test/msan/sigaltstack.cpp

  Log Message:
  -----------
  [msan] Fix sigaltstack false positive.

struct stack_t on Linux x86_64 has internal padding which may be left
uninitialized. The check should be replaced with multiple checks for
individual fields of the struct. For now, remove the check altogether.