Conflict with st_dev/st_ino identifiers under Debian GNU/Hurd

The problem is that the struct file_status on UNIX systems has two
members called st_dev and st_ino; those are also members of the
struct stat, and they are reserved identifiers which can also be
provided as #define (and this is the case for st_dev on Hurd).
The solution (attached) is to rename them, for example adding a
"fs_" prefix (= file status) to them.

Patch by Pino Toscano




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155354 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc
index edb101e..5f22f8e 100644
--- a/lib/Support/Unix/PathV2.inc
+++ b/lib/Support/Unix/PathV2.inc
@@ -285,8 +285,8 @@
 
 bool equivalent(file_status A, file_status B) {
   assert(status_known(A) && status_known(B));
-  return A.st_dev == B.st_dev &&
-         A.st_ino == B.st_ino;
+  return A.fs_st_dev == B.fs_st_dev &&
+         A.fs_st_ino == B.fs_st_ino;
 }
 
 error_code equivalent(const Twine &A, const Twine &B, bool &result) {
@@ -340,8 +340,8 @@
   else
     result = file_status(file_type::type_unknown);
 
-  result.st_dev = status.st_dev;
-  result.st_ino = status.st_ino;
+  result.fs_st_dev = status.st_dev;
+  result.fs_st_ino = status.st_ino;
 
   return error_code::success();
 }