From: corinna <corinna>
Date: Fri, 19 Oct 2001 19:17:04 +0000 (+0000)
Subject:         * path.cc (getcwd): Allow len == 0 when buf == NULL.
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=1684a40777a33ef3eb899e3ae9eb23760cf556ed;p=pf3gnuchains%2Fsourceware.git

    * path.cc (getcwd): Allow len == 0 when buf == NULL.
---

diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 5a8ed18f4d..ccb4a8212b 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+2001-10-19  Corinna Vinschen  <corinna@vinschen.de>
+
+	* path.cc (getcwd): Allow len == 0 when buf == NULL.
+
 2001-10-18  Christopher Faylor  <cgf@redhat.com>
 
 	* syscalls.cc (_read): Validate input pointer.
diff --git a/winsup/cygwin/path.cc b/winsup/cygwin/path.cc
index 317b3a6d74..066ef2e301 100644
--- a/winsup/cygwin/path.cc
+++ b/winsup/cygwin/path.cc
@@ -3120,7 +3120,7 @@ char *
 getcwd (char *buf, size_t ulen)
 {
   char* res = NULL;
-  if (ulen == 0)
+  if (ulen == 0 && buf)
     set_errno (EINVAL);
   else if (buf == NULL || !__check_null_invalid_struct_errno (buf, ulen))
     res = cygheap->cwd.get (buf, 1, 1, ulen);