--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gfortran.dg/chmod_2.f90	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,35 @@
+! { dg-do run { target { ! { *-*-mingw* *-*-cygwin* spu-*-* } } } }
+! { dg-options "-std=gnu" }
+! See PR38956.  Test fails on cygwin when user has Administrator rights
+  implicit none
+  character(len=*), parameter :: n = "foobar_file_chmod_2"
+  integer :: i
+
+  open (10,file=n)
+  close (10,status="delete")
+
+  open (10,file=n)
+  close (10,status="keep")
+
+  if (access(n,"") /= 0 .or. access(n," ") /= 0 .or. access(n,"r") /= 0 .or. &
+      access(n,"R") /= 0 .or. access(n,"w") /= 0 .or. access(n,"W") /= 0) &
+    call abort
+
+  i = chmod (n, "a+x")
+  if (i == 0) then
+    if (access(n,"x") /= 0 .or. access(n,"X") /= 0) call abort
+  end if
+
+  i = chmod (n, "a-w")
+  if (i == 0 .and. getuid() /= 0) then
+    if (access(n,"w") == 0 .or. access(n,"W") == 0) call abort
+  end if
+
+  open (10,file=n)
+  close (10,status="delete")
+
+  if (access(n,"") == 0 .or. access(n," ") == 0 .or. access(n,"r") == 0 .or. &
+      access(n,"R") == 0 .or. access(n,"w") == 0 .or. access(n,"W") == 0) &
+    call abort
+
+  end