commit 496454ee95a0e8fd9331562b779db4a53f98d425
author Zbigniew Sarbinowski <zibi@ca.ibm.com> Sat Jan 23 23:04:30 2021 +0000
committer Copybara-Service <copybara-worker@google.com> Sun Jan 24 20:48:13 2021 -0800
tree 39fe8ab9442008eb5275b682e4116a87980e8c1b
parent 01302fe6b8f3be22454b0b370424e56372e58242

[SystemZ][ZOS] Provide PATH_MAX macro for libcxx

Defining PATH_MAX to _XOPEN_PATH_MAX which is the closest macro available on z/OS.
Note that this value is 1024 which is 4 times smaller from same macro on Linux.

Reviewed By: #libc, ldionne, hubert.reinterpretcast

Differential Revision: https://reviews.llvm.org/D92110

GitOrigin-RevId: 92bb81aac1f16e2e9633d101b8b3f83d9c91dd48

src/filesystem/operations.cpp

diff --git a/src/filesystem/operations.cpp b/src/filesystem/operations.cpp
index 7db2d1f..50a895d 100644
--- a/src/filesystem/operations.cpp
+++ b/src/filesystem/operations.cpp
@@ -634,7 +634,11 @@
     return err.report(capture_errno());
   return {hold.get()};
 #else
-  char buff[PATH_MAX + 1];
+  #if defined(__MVS__) && !defined(PATH_MAX)
+    char buff[ _XOPEN_PATH_MAX + 1 ];
+  #else
+    char buff[PATH_MAX + 1];
+  #endif
   char* ret;
   if ((ret = ::realpath(p.c_str(), buff)) == nullptr)
     return err.report(capture_errno());