[libcxx] r268346 - Guard use of <unistd.h> in test.

[Eric Fiselier via cfe-commits]

Author: ericwf
Date: Mon May  2 19:36:57 2016
New Revision: 268346

URL: http://llvm.org/viewvc/llvm-project?rev=268346&view=rev
Log:
Guard use of <unistd.h> in test.

Modified:
    libcxx/trunk/test/std/numerics/rand/rand.device/ctor.pass.cpp

Modified: libcxx/trunk/test/std/numerics/rand/rand.device/ctor.pass.cpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/std/numerics/rand/rand.device/ctor.pass.cpp?rev=268346&r1=268345&r2=268346&view=diff
==============================================================================
--- libcxx/trunk/test/std/numerics/rand/rand.device/ctor.pass.cpp (original)
+++ libcxx/trunk/test/std/numerics/rand/rand.device/ctor.pass.cpp Mon May  2 19:36:57 2016
@@ -22,7 +22,11 @@
 #include <random>
 #include <system_error>
 #include <cassert>
+
+#if !defined(_WIN32)
 #include <unistd.h>
+#endif
+
 
 bool is_valid_random_device(const std::string &token) {
 #if defined(_LIBCPP_USING_DEV_RANDOM)
@@ -41,32 +45,19 @@ void check_random_device_invalid(const s
   try {
     std::random_device r(token);
     assert(false);
-  } catch (const std::system_error &e) {
+  } catch (const std::system_error&) {
   }
 }
 
-int main() {
-  { std::random_device r; }
 
+int main() {
   {
-    int ec;
-    ec = close(STDIN_FILENO);
-    assert(!ec);
-    ec = close(STDOUT_FILENO);
-    assert(!ec);
-    ec = close(STDERR_FILENO);
-    assert(!ec);
     std::random_device r;
   }
-
   {
     std::string token = "wrong file";
-    if (is_valid_random_device(token))
-      check_random_device_valid(token);
-    else
-      check_random_device_invalid(token);
+    check_random_device_invalid(token);
   }
-
   {
     std::string token = "/dev/urandom";
     if (is_valid_random_device(token))
@@ -74,7 +65,6 @@ int main() {
     else
       check_random_device_invalid(token);
   }
-
   {
     std::string token = "/dev/random";
     if (is_valid_random_device(token))
@@ -82,4 +72,19 @@ int main() {
     else
       check_random_device_invalid(token);
   }
+#if !defined(_WIN32)
+// Test that random_device(const string&) properly handles getting
+// a file descriptor with the value '0'. Do this by closing the standard
+// streams so that the descriptor '0' is available.
+  {
+    int ec;
+    ec = close(STDIN_FILENO);
+    assert(!ec);
+    ec = close(STDOUT_FILENO);
+    assert(!ec);
+    ec = close(STDERR_FILENO);
+    assert(!ec);
+    std::random_device r;
+  }
+#endif // !defined(_WIN32)
 }