[all-commits] [llvm/llvm-project] c80d34: [msan][tsan] Refine __fxstat{, at}{, 64} condition

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c80d34985993a2e4f6a8ad6cc92b0bc6bde16797
      https://github.com/llvm/llvm-project/commit/c80d34985993a2e4f6a8ad6cc92b0bc6bde16797
  Author: Fangrui Song <i at maskray.me>
  Date:   2022-01-28 (Fri, 28 Jan 2022)

  Changed paths:
    M compiler-rt/lib/msan/msan_interceptors.cpp
    M compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp

  Log Message:
  -----------
  [msan][tsan] Refine __fxstat{,at}{,64} condition

In glibc before 2.33, include/sys/stat.h defines fstat/fstat64 to
`__fxstat/__fxstat64` and provides `__fxstat/__fxstat64` in libc_nonshared.a.
The symbols are glibc specific and not needed on other systems.

Reviewed By: vitalybuka, #sanitizers

Differential Revision: https://reviews.llvm.org/D118423