--- OpenShadingLanguage-Release-1.8.9/src/liboslcomp/oslcomp.cpp.orig	2017-05-31 08:14:33.000000000 +0300
+++ OpenShadingLanguage-Release-1.8.9/src/liboslcomp/oslcomp.cpp	2017-06-19 11:08:15.725143800 +0300
@@ -202,8 +202,8 @@
                                   std::string &result)
 {
     // Read file contents into a string
-    std::ifstream instream;
-    OIIO::Filesystem::open(instream, filename);
+    OIIO::ifstream instream;
+    OIIO::Filesystem::open(instream, OIIO::string_view(filename.c_str()));
     if (! instream.is_open()) {
         error (ustring(filename), 0, "Could not open \"%s\"\n", filename.c_str());
         return false;
@@ -558,8 +558,8 @@
             if (m_output_filename.size() == 0)
                 m_output_filename = default_output_filename ();
 
-            std::ofstream oso_output;
-            OIIO::Filesystem::open (oso_output, m_output_filename);
+            OIIO::ofstream oso_output;
+            OIIO::Filesystem::open (oso_output, OIIO::string_view(m_output_filename.c_str()));
             if (! oso_output.good()) {
                 error (ustring(), 0, "Could not open \"%s\"",
                        m_output_filename.c_str());
--- OpenShadingLanguage-Release-1.8.9/src/liboslexec/shadingsys.cpp.orig	2017-05-31 08:14:33.000000000 +0300
+++ OpenShadingLanguage-Release-1.8.9/src/liboslexec/shadingsys.cpp	2017-06-19 11:10:14.683198900 +0300
@@ -2912,8 +2916,8 @@
 
     bool ok = true;
     std::string groupfilename = tmpdir + "/shadergroup";
-    std::ofstream groupfile;
-    OIIO::Filesystem::open(groupfile, groupfilename);
+    OIIO::ofstream groupfile;
+    OIIO::Filesystem::open(groupfile, OIIO::string_view(groupfilename.c_str()));
     if (groupfile.good()) {
         groupfile << group->serialize();
         groupfile.close ();