Fix the build under Debian GNU/Hurd.
Thanks to Pino Toscano for the patch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154500 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc
index c2d7df6..edb101e 100644
--- a/lib/Support/Unix/PathV2.inc
+++ b/lib/Support/Unix/PathV2.inc
@@ -46,6 +46,11 @@
#include <limits.h>
#endif
+// For GNU Hurd
+#if defined(__GNU__) && !defined(PATH_MAX)
+# define PATH_MAX 4096
+#endif
+
using namespace llvm;
namespace {
@@ -96,7 +101,12 @@
namespace fs {
error_code current_path(SmallVectorImpl<char> &result) {
+#ifdef MAXPATHLEN
result.reserve(MAXPATHLEN);
+#else
+// For GNU Hurd
+ result.reserve(1024);
+#endif
while (true) {
if (::getcwd(result.data(), result.capacity()) == 0) {